// Generated by tools/embed-stdlib.mbtx; do not edit.
// Google Jsonnet stdlib, Apache-2.0; see NOTICE and the embedded header.

///|
fn standard_library_source() -> String {
  (
    #|/*
    #|Copyright 2015 Google Inc. All rights reserved.
    #|
    #|Licensed under the Apache License, Version 2.0 (the "License");
    #|you may not use this file except in compliance with the License.
    #|You may obtain a copy of the License at
    #|
    #|    http://www.apache.org/licenses/LICENSE-2.0
    #|
    #|Unless required by applicable law or agreed to in writing, software
    #|distributed under the License is distributed on an "AS IS" BASIS,
    #|WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    #|See the License for the specific language governing permissions and
    #|limitations under the License.
    #|*/
    #|
    #|/* This is the Jsonnet standard library, at least the parts of it that are written in Jsonnet.
    #| *
    #| * There are some native methods as well, which are defined in the interpreter and added to this
    #| * file.  It is never necessary to import std.jsonnet, it is embedded into the interpreter at
    #| * compile-time and automatically imported into all other Jsonnet programs.
    #| */
    #|{
    #|
    #|  local std = self,
    #|  local id = function(x) x,
    #|
    #|  local go_only_function = error 'This function is only supported in go version of jsonnet. See https://github.com/google/go-jsonnet',
    #|
    #|  isString(v):: std.type(v) == 'string',
    #|  isNumber(v):: std.type(v) == 'number',
    #|  isBoolean(v):: std.type(v) == 'boolean',
    #|  isObject(v):: std.type(v) == 'object',
    #|  isArray(v):: std.type(v) == 'array',
    #|  isFunction(v):: std.type(v) == 'function',
    #|
    #|  toString(a)::
    #|    if std.type(a) == 'string' then a else '' + a,
    #|
    #|  substr(str, from, len)::
    #|    assert std.isString(str) : 'substr first parameter should be a string, got ' + std.type(str);
    #|    assert std.isNumber(from) : 'substr second parameter should be a string, got ' + std.type(from);
    #|    assert std.isNumber(len) : 'substr third parameter should be a string, got ' + std.type(len);
    #|    assert len >= 0 : 'substr third parameter should be greater than zero, got ' + len;
    #|    std.join('', std.makeArray(std.max(0, std.min(len, std.length(str) - from)), function(i) str[i + from])),
    #|
    #|  startsWith(a, b)::
    #|    if std.length(a) < std.length(b) then
    #|      false
    #|    else
    #|      std.substr(a, 0, std.length(b)) == b,
    #|
    #|  endsWith(a, b)::
    #|    if std.length(a) < std.length(b) then
    #|      false
    #|    else
    #|      std.substr(a, std.length(a) - std.length(b), std.length(b)) == b,
    #|
    #|  lstripChars(str, chars)::
    #|    if std.length(str) > 0 && std.member(chars, str[0]) then
    #|      std.lstripChars(str[1:], chars) tailstrict
    #|    else
    #|      str,
    #|
    #|  rstripChars(str, chars)::
    #|    local len = std.length(str);
    #|    if len > 0 && std.member(chars, str[len - 1]) then
    #|      std.rstripChars(str[:len - 1], chars) tailstrict
    #|    else
    #|      str,
    #|
    #|  stripChars(str, chars)::
    #|    std.lstripChars(std.rstripChars(str, chars), chars),
    #|
    #|  stringChars(str)::
    #|    std.makeArray(std.length(str), function(i) str[i]),
    #|
    #|  local parse_nat(str, base) =
    #|    assert base > 0 && base <= 16 : 'integer base %d invalid' % base;
    #|    // These codepoints are in ascending order:
    #|    local zero_code = std.codepoint('0');
    #|    local upper_a_code = std.codepoint('A');
    #|    local lower_a_code = std.codepoint('a');
    #|    local addDigit(aggregate, char) =
    #|      local code = std.codepoint(char);
    #|      local digit = if code >= lower_a_code then
    #|        code - lower_a_code + 10
    #|      else if code >= upper_a_code then
    #|        code - upper_a_code + 10
    #|      else
    #|        code - zero_code;
    #|      assert digit >= 0 && digit < base : '%s is not a base %d integer' % [str, base];
    #|      base * aggregate + digit;
    #|    std.foldl(addDigit, std.stringChars(str), 0),
    #|
    #|  parseInt(str)::
    #|    assert std.isString(str) : 'Expected string, got ' + std.type(str);
    #|    assert std.length(str) > 0 && str != '-' : 'Not an integer: "%s"' % [str];
    #|    if str[0] == '-' then
    #|      -parse_nat(str[1:], 10)
    #|    else
    #|      parse_nat(str, 10),
    #|
    #|  parseOctal(str)::
    #|    assert std.isString(str) : 'Expected string, got ' + std.type(str);
    #|    assert std.length(str) > 0 : 'Not an octal number: ""';
    #|    parse_nat(str, 8),
    #|
    #|  parseHex(str)::
    #|    assert std.isString(str) : 'Expected string, got ' + std.type(str);
    #|    assert std.length(str) > 0 : 'Not hexadecimal: ""';
    #|    parse_nat(str, 16),
    #|
    #|  split(str, c)::
    #|    assert std.isString(str) : 'std.split first parameter must be a String, got ' + std.type(str);
    #|    assert std.isString(c) : 'std.split second parameter must be a String, got ' + std.type(c);
    #|    assert std.length(c) >= 1 : 'std.split second parameter must have length 1 or greater, got ' + std.length(c);
    #|    std.splitLimit(str, c, -1),
    #|
    #|  splitLimit(str, c, maxsplits)::
    #|    assert std.isString(str) : 'str.splitLimit first parameter must be a String, got ' + std.type(str);
    #|    assert std.isString(c) : 'str.splitLimit second parameter must be a String, got ' + std.type(c);
    #|    assert std.length(c) >= 1 : 'std.splitLimit second parameter must have length 1 or greater, got ' + std.length(c);
    #|    assert std.isNumber(maxsplits) : 'str.splitLimit third parameter must be a Number, got ' + std.type(maxsplits);
    #|    local strLen = std.length(str);
    #|    local cLen = std.length(c);
    #|    local aux(idx, ret, val) =
    #|      if idx >= strLen then
    #|        ret + [val]
    #|      else if str[idx:idx + cLen:1] == c &&
    #|              (maxsplits == -1 || std.length(ret) < maxsplits) then
    #|        aux(idx + cLen, ret + [val], '')
    #|      else
    #|        aux(idx + 1, ret, val + str[idx]);
    #|    aux(0, [], ''),
    #|
    #|  splitLimitR(str, c, maxsplits)::
    #|    assert std.isString(str) : 'str.splitLimitR first parameter must be a String, got ' + std.type(str);
    #|    assert std.isString(c) : 'str.splitLimitR second parameter must be a String, got ' + std.type(c);
    #|    assert std.length(c) >= 1 : 'std.splitLimitR second parameter must have length 1 or greater, got ' + std.length(c);
    #|    assert std.isNumber(maxsplits) : 'str.splitLimitR third parameter must be a Number, got ' + std.type(maxsplits);
    #|    if maxsplits == -1 then
    #|      std.splitLimit(str, c, -1)
    #|    else
    #|      local revStr(str) = std.join('', std.reverse(std.stringChars(str)));
    #|      std.map(function(e) revStr(e), std.reverse(std.splitLimit(revStr(str), revStr(c), maxsplits))),
    #|
    #|  strReplace(str, from, to)::
    #|    assert std.isString(str);
    #|    assert std.isString(from);
    #|    assert std.isString(to);
    #|    assert from != '' : "'from' string must not be zero length.";
    #|
    #|    // Cache for performance.
    #|    local str_len = std.length(str);
    #|    local from_len = std.length(from);
    #|
    #|    // True if from is at str[i].
    #|    local found_at(i) = str[i:i + from_len] == from;
    #|
    #|    // Return the remainder of 'str' starting with 'start_index' where
    #|    // all occurrences of 'from' after 'curr_index' are replaced with 'to'.
    #|    local replace_after(start_index, curr_index, acc) =
    #|      if curr_index > str_len then
    #|        acc + str[start_index:curr_index]
    #|      else if found_at(curr_index) then
    #|        local new_index = curr_index + std.length(from);
    #|        replace_after(new_index, new_index, acc + str[start_index:curr_index] + to) tailstrict
    #|      else
    #|        replace_after(start_index, curr_index + 1, acc) tailstrict;
    #|
    #|    // if from_len==1, then we replace by splitting and rejoining the
    #|    // string which is much faster than recursing on replace_after
    #|    if from_len == 1 then
    #|      std.join(to, std.split(str, from))
    #|    else
    #|      replace_after(0, 0, ''),
    #|
    #|  asciiUpper(str)::
    #|    local cp = std.codepoint;
    #|    local up_letter(c) = if cp(c) >= 97 && cp(c) < 123 then
    #|      std.char(cp(c) - 32)
    #|    else
    #|      c;
    #|    std.join('', std.map(up_letter, std.stringChars(str))),
    #|
    #|  asciiLower(str)::
    #|    local cp = std.codepoint;
    #|    local down_letter(c) = if cp(c) >= 65 && cp(c) < 91 then
    #|      std.char(cp(c) + 32)
    #|    else
    #|      c;
    #|    std.join('', std.map(down_letter, std.stringChars(str))),
    #|
    #|  range(from, to)::
    #|    std.makeArray(to - from + 1, function(i) i + from),
    #|
    #|  repeat(what, count)::
    #|    local joiner =
    #|      if std.isString(what) then ''
    #|      else if std.isArray(what) then []
    #|      else error 'std.repeat first argument must be an array or a string';
    #|    std.join(joiner, std.makeArray(count, function(i) what)),
    #|
    #|  slice(indexable, index, end, step)::
    #|    local invar =
    #|      // loop invariant with defaults applied
    #|      {
    #|        indexable: indexable,
    #|        index:
    #|          if index == null
    #|          then 0
    #|          else
    #|            if index < 0
    #|            then std.max(0, std.length(indexable) + index)
    #|            else index,
    #|        end:
    #|          if end == null
    #|          then std.length(indexable)
    #|          else
    #|            if end < 0
    #|            then std.length(indexable) + end
    #|            else end,
    #|        step:
    #|          if step == null
    #|          then 1
    #|          else step,
    #|        length: std.length(indexable),
    #|        type: std.type(indexable),
    #|      };
    #|    assert invar.step >= 0 : 'got [%s:%s:%s] but negative steps are not supported' % [invar.index, invar.end, invar.step];
    #|    assert step != 0 : 'got %s but step must be greater than 0' % step;
    #|    assert std.isString(indexable) || std.isArray(indexable) : 'std.slice accepts a string or an array, but got: %s' % std.type(indexable);
    #|    local build(slice, cur) =
    #|      if cur >= invar.end || cur >= invar.length then
    #|        slice
    #|      else
    #|        build(
    #|          if invar.type == 'string' then
    #|            slice + invar.indexable[cur]
    #|          else
    #|            slice + [invar.indexable[cur]],
    #|          cur + invar.step
    #|        ) tailstrict;
    #|    build(if invar.type == 'string' then '' else [], invar.index),
    #|
    #|  member(arr, x)::
    #|    if std.isArray(arr) then
    #|      std.count(arr, x) > 0
    #|    else if std.isString(arr) then
    #|      std.length(std.findSubstr(x, arr)) > 0
    #|    else error 'std.member first argument must be an array or a string',
    #|
    #|  count(arr, x):: std.length(std.filter(function(v) v == x, arr)),
    #|
    #|  mod(a, b)::
    #|    if std.isNumber(a) && std.isNumber(b) then
    #|      std.modulo(a, b)
    #|    else if std.isString(a) then
    #|      std.format(a, b)
    #|    else
    #|      error 'Operator % cannot be used on types ' + std.type(a) + ' and ' + std.type(b) + '.',
    #|
    #|  // this is the most precision that will fit in a f64
    #|  pi:: 3.14159265358979311600,
    #|
    #|  deg2rad(x):: x * std.pi / 180,
    #|  rad2deg(x):: x * 180 / std.pi,
    #|
    #|  log2(x):: std.log(x) / std.log(2),
    #|  log10(x):: std.log(x) / std.log(10),
    #|
    #|  map(func, arr)::
    #|    if !std.isFunction(func) then
    #|      error ('std.map first param must be function, got ' + std.type(func))
    #|    else if !std.isArray(arr) && !std.isString(arr) then
    #|      error ('std.map second param must be array / string, got ' + std.type(arr))
    #|    else
    #|      std.makeArray(std.length(arr), function(i) func(arr[i])),
    #|
    #|  mapWithIndex(func, arr)::
    #|    if !std.isFunction(func) then
    #|      error ('std.mapWithIndex first param must be function, got ' + std.type(func))
    #|    else if !std.isArray(arr) && !std.isString(arr) then
    #|      error ('std.mapWithIndex second param must be array, got ' + std.type(arr))
    #|    else
    #|      std.makeArray(std.length(arr), function(i) func(i, arr[i])),
    #|
    #|  mapWithKey(func, obj)::
    #|    if !std.isFunction(func) then
    #|      error ('std.mapWithKey first param must be function, got ' + std.type(func))
    #|    else if !std.isObject(obj) then
    #|      error ('std.mapWithKey second param must be object, got ' + std.type(obj))
    #|    else
    #|      { [k]: func(k, obj[k]) for k in std.objectFields(obj) },
    #|
    #|  flatMap(func, arr)::
    #|    if !std.isFunction(func) then
    #|      error ('std.flatMap first param must be function, got ' + std.type(func))
    #|    else if std.isArray(arr) then
    #|      std.flattenArrays(std.makeArray(std.length(arr), function(i) func(arr[i])))
    #|    else if std.isString(arr) then
    #|      std.join('', std.makeArray(std.length(arr), function(i) func(arr[i])))
    #|    else error ('std.flatMap second param must be array / string, got ' + std.type(arr)),
    #|
    #|  join(sep, arr)::
    #|    local aux(arr, i, first, running) =
    #|      if i >= std.length(arr) then
    #|        running
    #|      else if arr[i] == null then
    #|        aux(arr, i + 1, first, running) tailstrict
    #|      else if std.type(arr[i]) != std.type(sep) then
    #|        error 'expected %s but arr[%d] was %s ' % [std.type(sep), i, std.type(arr[i])]
    #|      else if first then
    #|        aux(arr, i + 1, false, running + arr[i]) tailstrict
    #|      else
    #|        aux(arr, i + 1, false, running + sep + arr[i]) tailstrict;
    #|    if !std.isArray(arr) then
    #|      error 'join second parameter should be array, got ' + std.type(arr)
    #|    else if std.isString(sep) then
    #|      aux(arr, 0, true, '')
    #|    else if std.isArray(sep) then
    #|      aux(arr, 0, true, [])
    #|    else
    #|      error 'join first parameter should be string or array, got ' + std.type(sep),
    #|
    #|  lines(arr)::
    #|    std.join('\n', arr + ['']),
    #|
    #|  deepJoin(arr)::
    #|    if std.isString(arr) then
    #|      arr
    #|    else if std.isArray(arr) then
    #|      std.join('', [std.deepJoin(x) for x in arr])
    #|    else
    #|      error 'Expected string or array, got %s' % std.type(arr),
    #|
    #|
    #|  format(str, vals)::
    #|
    #|    /////////////////////////////
    #|    // Parse the mini-language //
    #|    /////////////////////////////
    #|
    #|    local try_parse_mapping_key(str, i) =
    #|      assert i < std.length(str) : 'Truncated format code.';
    #|      local c = str[i];
    #|      if c == '(' then
    #|        local consume(str, j, v) =
    #|          if j >= std.length(str) then
    #|            error 'Truncated format code.'
    #|          else
    #|            local c = str[j];
    #|            if c != ')' then
    #|              consume(str, j + 1, v + c)
    #|            else
    #|              { i: j + 1, v: v };
    #|        consume(str, i + 1, '')
    #|      else
    #|        { i: i, v: null };
    #|
    #|    local try_parse_cflags(str, i) =
    #|      local consume(str, j, v) =
    #|        assert j < std.length(str) : 'Truncated format code.';
    #|        local c = str[j];
    #|        if c == '#' then
    #|          consume(str, j + 1, v { alt: true })
    #|        else if c == '0' then
    #|          consume(str, j + 1, v { zero: true })
    #|        else if c == '-' then
    #|          consume(str, j + 1, v { left: true })
    #|        else if c == ' ' then
    #|          consume(str, j + 1, v { blank: true })
    #|        else if c == '+' then
    #|          consume(str, j + 1, v { plus: true })
    #|        else
    #|          { i: j, v: v };
    #|      consume(str, i, { alt: false, zero: false, left: false, blank: false, plus: false });
    #|
    #|    local try_parse_field_width(str, i) =
    #|      if i < std.length(str) && str[i] == '*' then
    #|        { i: i + 1, v: '*' }
    #|      else
    #|        local consume(str, j, v) =
    #|          assert j < std.length(str) : 'Truncated format code.';
    #|          local c = str[j];
    #|          if c == '0' then
    #|            consume(str, j + 1, v * 10 + 0)
    #|          else if c == '1' then
    #|            consume(str, j + 1, v * 10 + 1)
    #|          else if c == '2' then
    #|            consume(str, j + 1, v * 10 + 2)
    #|          else if c == '3' then
    #|            consume(str, j + 1, v * 10 + 3)
    #|          else if c == '4' then
    #|            consume(str, j + 1, v * 10 + 4)
    #|          else if c == '5' then
    #|            consume(str, j + 1, v * 10 + 5)
    #|          else if c == '6' then
    #|            consume(str, j + 1, v * 10 + 6)
    #|          else if c == '7' then
    #|            consume(str, j + 1, v * 10 + 7)
    #|          else if c == '8' then
    #|            consume(str, j + 1, v * 10 + 8)
    #|          else if c == '9' then
    #|            consume(str, j + 1, v * 10 + 9)
    #|          else
    #|            { i: j, v: v };
    #|        consume(str, i, 0);
    #|
    #|    local try_parse_precision(str, i) =
    #|      assert i < std.length(str) : 'Truncated format code.';
    #|      local c = str[i];
    #|      if c == '.' then
    #|        try_parse_field_width(str, i + 1)
    #|      else
    #|        { i: i, v: null };
    #|
    #|    // Ignored, if it exists.
    #|    local try_parse_length_modifier(str, i) =
    #|      assert i < std.length(str) : 'Truncated format code.';
    #|      local c = str[i];
    #|      if c == 'h' || c == 'l' || c == 'L' then
    #|        i + 1
    #|      else
    #|        i;
    #|
    #|    local parse_conv_type(str, i) =
    #|      assert i < std.length(str) : 'Truncated format code.';
    #|      local c = str[i];
    #|      if c == 'd' || c == 'i' || c == 'u' then
    #|        { i: i + 1, v: 'd', caps: false }
    #|      else if c == 'o' then
    #|        { i: i + 1, v: 'o', caps: false }
    #|      else if c == 'x' then
    #|        { i: i + 1, v: 'x', caps: false }
    #|      else if c == 'X' then
    #|        { i: i + 1, v: 'x', caps: true }
    #|      else if c == 'e' then
    #|        { i: i + 1, v: 'e', caps: false }
    #|      else if c == 'E' then
    #|        { i: i + 1, v: 'e', caps: true }
    #|      else if c == 'f' then
    #|        { i: i + 1, v: 'f', caps: false }
    #|      else if c == 'F' then
    #|        { i: i + 1, v: 'f', caps: true }
    #|      else if c == 'g' then
    #|        { i: i + 1, v: 'g', caps: false }
    #|      else if c == 'G' then
    #|        { i: i + 1, v: 'g', caps: true }
    #|      else if c == 'c' then
    #|        { i: i + 1, v: 'c', caps: false }
    #|      else if c == 's' then
    #|        { i: i + 1, v: 's', caps: false }
    #|      else if c == '%' then
    #|        { i: i + 1, v: '%', caps: false }
    #|      else
    #|        error 'Unrecognised conversion type: ' + c;
    #|
    #|
    #|    // Parsed initial %, now the rest.
    #|    local parse_code(str, i) =
    #|      assert i < std.length(str) : 'Truncated format code.';
    #|      local mkey = try_parse_mapping_key(str, i);
    #|      local cflags = try_parse_cflags(str, mkey.i);
    #|      local fw = try_parse_field_width(str, cflags.i);
    #|      local prec = try_parse_precision(str, fw.i);
    #|      local len_mod = try_parse_length_modifier(str, prec.i);
    #|      local ctype = parse_conv_type(str, len_mod);
    #|      {
    #|        i: ctype.i,
    #|        code: {
    #|          mkey: mkey.v,
    #|          cflags: cflags.v,
    #|          fw: fw.v,
    #|          prec: prec.v,
    #|          ctype: ctype.v,
    #|          caps: ctype.caps,
    #|        },
    #|      };
    #|
    #|    // Parse a format string (containing none or more % format tags).
    #|    local parse_codes(str, i, out, cur) =
    #|      if i >= std.length(str) then
    #|        out + [cur]
    #|      else
    #|        local c = str[i];
    #|        if c == '%' then
    #|          local r = parse_code(str, i + 1);
    #|          parse_codes(str, r.i, out + [cur, r.code], '') tailstrict
    #|        else
    #|          parse_codes(str, i + 1, out, cur + c) tailstrict;
    #|
    #|    local codes = parse_codes(str, 0, [], '');
    #|
    #|
    #|    ///////////////////////
    #|    // Format the values //
    #|    ///////////////////////
    #|
    #|    // Useful utilities
    #|    local padding(w, s) =
    #|      local aux(w, v) =
    #|        if w <= 0 then
    #|          v
    #|        else
    #|          aux(w - 1, v + s);
    #|      aux(w, '');
    #|
    #|    // Add s to the left of str so that its length is at least w.
    #|    local pad_left(str, w, s) =
    #|      padding(w - std.length(str), s) + str;
    #|
    #|    // Add s to the right of str so that its length is at least w.
    #|    local pad_right(str, w, s) =
    #|      str + padding(w - std.length(str), s);
    #|
    #|    // Render a sign & magnitude integer (radix ranges from decimal to binary).
    #|    // neg should be a boolean, and when true indicates that we should render a negative number.
    #|    // mag must always be a whole number >= 0, it's the magnitude of the integer to render
    #|    // min_chars must be a whole number >= 0
    #|    //   It is the field width, i.e. std.length() of the result should be >= min_chars
    #|    // min_digits must be a whole number >= 0. It's the number of zeroes to pad with.
    #|    // blank must be a boolean, if true adds an additional ' ' in front of a positive number, so
    #|    // that it is aligned with negative numbers with the same number of digits.
    #|    // plus must be a boolean, if true adds a '+' in front of a positive number, so that it is
    #|    // aligned with negative numbers with the same number of digits.  This takes precedence over
    #|    // blank, if both are true.
    #|    // radix must be a whole number >1 and <= 10.  It is the base of the system of numerals.
    #|    // zero_prefix is a string prefixed before the sign to all numbers that are not 0.
    #|    local render_int(neg, mag, min_chars, min_digits, blank, plus, radix, zero_prefix) =
    #|      // dec is the minimal string needed to represent the number as text.
    #|      local dec =
    #|        if mag == 0 then
    #|          '0'
    #|        else
    #|          local aux(n) =
    #|            if n == 0 then
    #|              zero_prefix
    #|            else
    #|              aux(std.floor(n / radix)) + (n % radix);
    #|          aux(mag);
    #|      local zp = min_chars - (if neg || blank || plus then 1 else 0);
    #|      local zp2 = std.max(zp, min_digits);
    #|      local dec2 = pad_left(dec, zp2, '0');
    #|      (if neg then '-' else if plus then '+' else if blank then ' ' else '') + dec2;
    #|
    #|    // Render an integer in hexadecimal.
    #|    local render_hex(n__, min_chars, min_digits, blank, plus, add_zerox, capitals) =
    #|      local numerals = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
    #|                       + if capitals then ['A', 'B', 'C', 'D', 'E', 'F']
    #|                       else ['a', 'b', 'c', 'd', 'e', 'f'];
    #|      local n_ = std.abs(n__);
    #|      local aux(n) =
    #|        if n == 0 then
    #|          ''
    #|        else
    #|          aux(std.floor(n / 16)) + numerals[n % 16];
    #|      local hex = if std.floor(n_) == 0 then '0' else aux(std.floor(n_));
    #|      local neg = n__ < 0;
    #|      local zp = min_chars - (if neg || blank || plus then 1 else 0)
    #|                 - (if add_zerox then 2 else 0);
    #|      local zp2 = std.max(zp, min_digits);
    #|      local hex2 = (if add_zerox then (if capitals then '0X' else '0x') else '')
    #|                   + pad_left(hex, zp2, '0');
    #|      (if neg then '-' else if plus then '+' else if blank then ' ' else '') + hex2;
    #|
    #|    local strip_trailing_zero(str) =
    #|      local aux(str, i) =
    #|        if i < 0 then
    #|          ''
    #|        else
    #|          if str[i] == '0' then
    #|            aux(str, i - 1)
    #|          else
    #|            std.substr(str, 0, i + 1);
    #|      aux(str, std.length(str) - 1);
    #|
    #|    // Render floating point in decimal form
    #|    local render_float_dec(n__, zero_pad, blank, plus, ensure_pt, trailing, prec) =
    #|      local n_ = std.abs(n__);
    #|      local whole = std.floor(n_);
    #|      // Represent the rounded number as an integer * 1/10**prec.
    #|      // Note that it can also be equal to 10**prec and we'll need to carry
    #|      // over to the wholes.  We operate on the absolute numbers, so that we
    #|      // don't have trouble with the rounding direction.
    #|      local denominator = std.pow(10, prec);
    #|      local numerator = std.abs(n_) * denominator + 0.5;
    #|      local whole = std.sign(n_) * std.floor(numerator / denominator);
    #|      local frac = std.floor(numerator) % denominator;
    #|      local dot_size = if prec == 0 && !ensure_pt then 0 else 1;
    #|      local zp = zero_pad - prec - dot_size;
    #|      local str = render_int(n__ < 0, whole, zp, 0, blank, plus, 10, '');
    #|      if prec == 0 then
    #|        str + if ensure_pt then '.' else ''
    #|      else
    #|        if trailing || frac > 0 then
    #|          local frac_str = render_int(false, frac, prec, 0, false, false, 10, '');
    #|          str + '.' + if !trailing then strip_trailing_zero(frac_str) else frac_str
    #|        else
    #|          str;
    #|
    #|    // Render floating point in scientific form
    #|    local render_float_sci(n__, zero_pad, blank, plus, ensure_pt, trailing, caps, prec) =
    #|      local exponent = if n__ == 0 then 0 else std.floor(std.log(std.abs(n__)) / std.log(10));
    #|      local suff = (if caps then 'E' else 'e')
    #|                   + render_int(exponent < 0, std.abs(exponent), 3, 0, false, true, 10, '');
    #|      local mantissa = if exponent == -324 then
    #|        // Avoid a rounding error where std.pow(10, -324) is 0
    #|        // -324 is the smallest exponent possible.
    #|        n__ * 10 / std.pow(10, exponent + 1)
    #|      else
    #|        n__ / std.pow(10, exponent);
    #|      local zp2 = zero_pad - std.length(suff);
    #|      render_float_dec(mantissa, zp2, blank, plus, ensure_pt, trailing, prec) + suff;
    #|
    #|    // Render a value with an arbitrary format code.
    #|    local format_code(val, code, fw, prec_or_null, i) =
    #|      local cflags = code.cflags;
    #|      local fpprec = if prec_or_null != null then prec_or_null else 6;
    #|      local iprec = if prec_or_null != null then prec_or_null else 0;
    #|      local zp = if cflags.zero && !cflags.left then fw else 0;
    #|      if code.ctype == 's' then
    #|        std.toString(val)
    #|      else if code.ctype == 'd' then
    #|        if std.type(val) != 'number' then
    #|          error 'Format required number at '
    #|                + i + ', got ' + std.type(val)
    #|        else
    #|          render_int(val <= -1, std.floor(std.abs(val)), zp, iprec, cflags.blank, cflags.plus, 10, '')
    #|      else if code.ctype == 'o' then
    #|        if std.type(val) != 'number' then
    #|          error 'Format required number at '
    #|                + i + ', got ' + std.type(val)
    #|        else
    #|          local zero_prefix = if cflags.alt then '0' else '';
    #|          render_int(val <= -1, std.floor(std.abs(val)), zp, iprec, cflags.blank, cflags.plus, 8, zero_prefix)
    #|      else if code.ctype == 'x' then
    #|        if std.type(val) != 'number' then
    #|          error 'Format required number at '
    #|                + i + ', got ' + std.type(val)
    #|        else
    #|          render_hex(std.floor(val),
    #|                     zp,
    #|                     iprec,
    #|                     cflags.blank,
    #|                     cflags.plus,
    #|                     cflags.alt,
    #|                     code.caps)
    #|      else if code.ctype == 'f' then
    #|        if std.type(val) != 'number' then
    #|          error 'Format required number at '
    #|                + i + ', got ' + std.type(val)
    #|        else
    #|          render_float_dec(val,
    #|                           zp,
    #|                           cflags.blank,
    #|                           cflags.plus,
    #|                           cflags.alt,
    #|                           true,
    #|                           fpprec)
    #|      else if code.ctype == 'e' then
    #|        if std.type(val) != 'number' then
    #|          error 'Format required number at '
    #|                + i + ', got ' + std.type(val)
    #|        else
    #|          render_float_sci(val,
    #|                           zp,
    #|                           cflags.blank,
    #|                           cflags.plus,
    #|                           cflags.alt,
    #|                           true,
    #|                           code.caps,
    #|                           fpprec)
    #|      else if code.ctype == 'g' then
    #|        if std.type(val) != 'number' then
    #|          error 'Format required number at '
    #|                + i + ', got ' + std.type(val)
    #|        else
    #|          local exponent = if val != 0 then std.floor(std.log(std.abs(val)) / std.log(10)) else 0;
    #|          if exponent < -4 || exponent >= fpprec then
    #|            render_float_sci(val,
    #|                             zp,
    #|                             cflags.blank,
    #|                             cflags.plus,
    #|                             cflags.alt,
    #|                             cflags.alt,
    #|                             code.caps,
    #|                             fpprec - 1)
    #|          else
    #|            local digits_before_pt = std.max(1, exponent + 1);
    #|            render_float_dec(val,
    #|                             zp,
    #|                             cflags.blank,
    #|                             cflags.plus,
    #|                             cflags.alt,
    #|                             cflags.alt,
    #|                             fpprec - digits_before_pt)
    #|      else if code.ctype == 'c' then
    #|        if std.type(val) == 'number' then
    #|          std.char(val)
    #|        else if std.type(val) == 'string' then
    #|          if std.length(val) == 1 then
    #|            val
    #|          else
    #|            error '%c expected 1-sized string got: ' + std.length(val)
    #|        else
    #|          error '%c expected number / string, got: ' + std.type(val)
    #|      else
    #|        error 'Unknown code: ' + code.ctype;
    #|
    #|    // Render a parsed format string with an array of values.
    #|    local format_codes_arr(codes, arr, i, j, v) =
    #|      if i >= std.length(codes) then
    #|        if j < std.length(arr) then
    #|          error ('Too many values to format: ' + std.length(arr) + ', expected ' + j)
    #|        else
    #|          v
    #|      else
    #|        local code = codes[i];
    #|        if std.type(code) == 'string' then
    #|          format_codes_arr(codes, arr, i + 1, j, v + code) tailstrict
    #|        else
    #|          local tmp = if code.fw == '*' then {
    #|            j: j + 1,
    #|            fw: if j >= std.length(arr) then
    #|              error ('Not enough values to format: ' + std.length(arr) + ', expected at least ' + j)
    #|            else
    #|              arr[j],
    #|          } else {
    #|            j: j,
    #|            fw: code.fw,
    #|          };
    #|          local tmp2 = if code.prec == '*' then {
    #|            j: tmp.j + 1,
    #|            prec: if tmp.j >= std.length(arr) then
    #|              error ('Not enough values to format: ' + std.length(arr) + ', expected at least ' + tmp.j)
    #|            else
    #|              arr[tmp.j],
    #|          } else {
    #|            j: tmp.j,
    #|            prec: code.prec,
    #|          };
    #|          local j2 = tmp2.j;
    #|          local val =
    #|            if j2 < std.length(arr) then
    #|              arr[j2]
    #|            else
    #|              error ('Not enough values to format: ' + std.length(arr) + ', expected more than ' + j2);
    #|          local s =
    #|            if code.ctype == '%' then
    #|              '%'
    #|            else
    #|              format_code(val, code, tmp.fw, tmp2.prec, j2);
    #|          local s_padded =
    #|            if code.cflags.left then
    #|              pad_right(s, tmp.fw, ' ')
    #|            else
    #|              pad_left(s, tmp.fw, ' ');
    #|          local j3 =
    #|            if code.ctype == '%' then
    #|              j2
    #|            else
    #|              j2 + 1;
    #|          format_codes_arr(codes, arr, i + 1, j3, v + s_padded) tailstrict;
    #|
    #|    // Render a parsed format string with an object of values.
    #|    local format_codes_obj(codes, obj, i, v) =
    #|      if i >= std.length(codes) then
    #|        v
    #|      else
    #|        local code = codes[i];
    #|        if std.type(code) == 'string' then
    #|          format_codes_obj(codes, obj, i + 1, v + code) tailstrict
    #|        else
    #|          local f =
    #|            if code.mkey == null then
    #|              error 'Mapping keys required.'
    #|            else
    #|              code.mkey;
    #|          local fw =
    #|            if code.fw == '*' then
    #|              error 'Cannot use * field width with object.'
    #|            else
    #|              code.fw;
    #|          local prec =
    #|            if code.prec == '*' then
    #|              error 'Cannot use * precision with object.'
    #|            else
    #|              code.prec;
    #|          local val =
    #|            if std.objectHasAll(obj, f) then
    #|              obj[f]
    #|            else
    #|              error 'No such field: ' + f;
    #|          local s =
    #|            if code.ctype == '%' then
    #|              '%'
    #|            else
    #|              format_code(val, code, fw, prec, f);
    #|          local s_padded =
    #|            if code.cflags.left then
    #|              pad_right(s, fw, ' ')
    #|            else
    #|              pad_left(s, fw, ' ');
    #|          format_codes_obj(codes, obj, i + 1, v + s_padded) tailstrict;
    #|
    #|    if std.isArray(vals) then
    #|      format_codes_arr(codes, vals, 0, 0, '')
    #|    else if std.isObject(vals) then
    #|      format_codes_obj(codes, vals, 0, '')
    #|    else
    #|      format_codes_arr(codes, [vals], 0, 0, ''),
    #|
    #|  foldr(func, arr, init)::
    #|    local aux(func, arr, running, idx) =
    #|      if idx < 0 then
    #|        running
    #|      else
    #|        aux(func, arr, func(arr[idx], running), idx - 1) tailstrict;
    #|    aux(func, arr, init, std.length(arr) - 1),
    #|
    #|  foldl(func, arr, init)::
    #|    local aux(func, arr, running, idx) =
    #|      if idx >= std.length(arr) then
    #|        running
    #|      else
    #|        aux(func, arr, func(running, arr[idx]), idx + 1) tailstrict;
    #|    aux(func, arr, init, 0),
    #|
    #|
    #|  filterMap(filter_func, map_func, arr)::
    #|    if !std.isFunction(filter_func) then
    #|      error ('std.filterMap first param must be function, got ' + std.type(filter_func))
    #|    else if !std.isFunction(map_func) then
    #|      error ('std.filterMap second param must be function, got ' + std.type(map_func))
    #|    else if !std.isArray(arr) then
    #|      error ('std.filterMap third param must be array, got ' + std.type(arr))
    #|    else
    #|      std.map(map_func, std.filter(filter_func, arr)),
    #|
    #|  assertEqual(a, b)::
    #|    // If the values are strings, escape them for printing.
    #|    // If not, they'll be JSON-stringified anyway by the later string concatenation.
    #|    local astr = if std.type(a) == 'string' then std.escapeStringJson(a) else a;
    #|    local bstr = if std.type(b) == 'string' then std.escapeStringJson(b) else b;
    #|    if a == b then
    #|      true
    #|    else
    #|      error 'Assertion failed. ' + astr + ' != ' + bstr,
    #|
    #|  abs(n)::
    #|    if !std.isNumber(n) then
    #|      error 'std.abs expected number, got ' + std.type(n)
    #|    else
    #|      if n > 0 then n else -n,
    #|
    #|  sign(n)::
    #|    if !std.isNumber(n) then
    #|      error 'std.sign expected number, got ' + std.type(n)
    #|    else
    #|      if n > 0 then
    #|        1
    #|      else if n < 0 then
    #|        -1
    #|      else 0,
    #|
    #|  max(a, b)::
    #|    if !std.isNumber(a) then
    #|      error 'std.max first param expected number, got ' + std.type(a)
    #|    else if !std.isNumber(b) then
    #|      error 'std.max second param expected number, got ' + std.type(b)
    #|    else
    #|      if a > b then a else b,
    #|
    #|  min(a, b)::
    #|    if !std.isNumber(a) then
    #|      error 'std.min first param expected number, got ' + std.type(a)
    #|    else if !std.isNumber(b) then
    #|      error 'std.min second param expected number, got ' + std.type(b)
    #|    else
    #|      if a < b then a else b,
    #|
    #|  clamp(x, minVal, maxVal)::
    #|    if x < minVal then minVal
    #|    else if x > maxVal then maxVal
    #|    else x,
    #|
    #|  flattenArrays(arrs)::
    #|    std.foldl(function(a, b) a + b, arrs, []),
    #|
    #|  flattenDeepArray(value)::
    #|    if std.isArray(value) then
    #|      [y for x in value for y in std.flattenDeepArray(x)]
    #|    else
    #|      [value],
    #|
    #|  manifestIni(ini)::
    #|    local body_lines(body) =
    #|      std.join([], [
    #|        local value_or_values = body[k];
    #|        if std.isArray(value_or_values) then
    #|          ['%s = %s' % [k, value] for value in value_or_values]
    #|        else
    #|          ['%s = %s' % [k, value_or_values]]
    #|
    #|        for k in std.objectFields(body)
    #|      ]);
    #|
    #|    local section_lines(sname, sbody) = ['[%s]' % [sname]] + body_lines(sbody),
    #|          main_body = if std.objectHas(ini, 'main') then body_lines(ini.main) else [],
    #|          all_sections = [
    #|      section_lines(k, ini.sections[k])
    #|      for k in std.objectFields(ini.sections)
    #|    ];
    #|    std.join('\n', main_body + std.flattenArrays(all_sections) + ['']),
    #|
    #|  manifestToml(value):: std.manifestTomlEx(value, '  '),
    #|
    #|  manifestTomlEx(value, indent)::
    #|    local
    #|      escapeStringToml = std.escapeStringJson,
    #|      escapeKeyToml(key) =
    #|        local bare_allowed = std.set(std.stringChars('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-'));
    #|        if std.setUnion(std.set(std.stringChars(key)), bare_allowed) == bare_allowed then key else escapeStringToml(key),
    #|      isTableArray(v) = std.isArray(v) && std.length(v) > 0 && std.all(std.map(std.isObject, v)),
    #|      isSection(v) = std.isObject(v) || isTableArray(v),
    #|      renderValue(v, indexedPath, inline, cindent) =
    #|        if v == true then
    #|          'true'
    #|        else if v == false then
    #|          'false'
    #|        else if v == null then
    #|          error 'Tried to manifest "null" at ' + indexedPath
    #|        else if std.isNumber(v) then
    #|          '' + v
    #|        else if std.isString(v) then
    #|          escapeStringToml(v)
    #|        else if std.isFunction(v) then
    #|          error 'Tried to manifest function at ' + indexedPath
    #|        else if std.isArray(v) then
    #|          if std.length(v) == 0 then
    #|            '[]'
    #|          else
    #|            local range = std.range(0, std.length(v) - 1);
    #|            local new_indent = if inline then '' else cindent + indent;
    #|            local separator = if inline then ' ' else '\n';
    #|            local lines = ['[' + separator]
    #|                          + std.join([',' + separator],
    #|                                     [
    #|                                       [new_indent + renderValue(v[i], indexedPath + [i], true, '')]
    #|                                       for i in range
    #|                                     ])
    #|                          + [separator + (if inline then '' else cindent) + ']'];
    #|            std.join('', lines)
    #|        else if std.isObject(v) then
    #|          local lines = ['{ ']
    #|                        + std.join([', '],
    #|                                   [
    #|                                     [escapeKeyToml(k) + ' = ' + renderValue(v[k], indexedPath + [k], true, '')]
    #|                                     for k in std.objectFields(v)
    #|                                   ])
    #|                        + [' }'];
    #|          std.join('', lines),
    #|      renderTableInternal(v, path, indexedPath, cindent) =
    #|        local kvp = std.flattenArrays([
    #|          [cindent + escapeKeyToml(k) + ' = ' + renderValue(v[k], indexedPath + [k], false, cindent)]
    #|          for k in std.objectFields(v)
    #|          if !isSection(v[k])
    #|        ]);
    #|        local sections = [std.join('\n', kvp)] + [
    #|          (
    #|            if std.isObject(v[k]) then
    #|              renderTable(v[k], path + [k], indexedPath + [k], cindent)
    #|            else
    #|              renderTableArray(v[k], path + [k], indexedPath + [k], cindent)
    #|          )
    #|          for k in std.objectFields(v)
    #|          if isSection(v[k])
    #|        ];
    #|        std.join('\n\n', sections),
    #|      renderTable(v, path, indexedPath, cindent) =
    #|        cindent + '[' + std.join('.', std.map(escapeKeyToml, path)) + ']'
    #|        + (if v == {} then '' else '\n')
    #|        + renderTableInternal(v, path, indexedPath, cindent + indent),
    #|      renderTableArray(v, path, indexedPath, cindent) =
    #|        local range = std.range(0, std.length(v) - 1);
    #|        local sections = [
    #|          (cindent + '[[' + std.join('.', std.map(escapeKeyToml, path)) + ']]'
    #|           + (if v[i] == {} then '' else '\n')
    #|           + renderTableInternal(v[i], path, indexedPath + [i], cindent + indent))
    #|          for i in range
    #|        ];
    #|        std.join('\n\n', sections);
    #|    if std.isObject(value) then
    #|      renderTableInternal(value, [], [], '')
    #|    else
    #|      error 'TOML body must be an object. Got ' + std.type(value),
    #|
    #|  escapeStringJson(str_)::
    #|    local str = std.toString(str_);
    #|    local trans(ch) =
    #|      if ch == '"' then
    #|        '\\"'
    #|      else if ch == '\\' then
    #|        '\\\\'
    #|      else if ch == '\b' then
    #|        '\\b'
    #|      else if ch == '\f' then
    #|        '\\f'
    #|      else if ch == '\n' then
    #|        '\\n'
    #|      else if ch == '\r' then
    #|        '\\r'
    #|      else if ch == '\t' then
    #|        '\\t'
    #|      else
    #|        local cp = std.codepoint(ch);
    #|        if cp < 32 || (cp >= 127 && cp <= 159) then
    #|          '\\u%04x' % [cp]
    #|        else
    #|          ch;
    #|    '"%s"' % std.join('', [trans(ch) for ch in std.stringChars(str)]),
    #|
    #|  escapeStringPython(str)::
    #|    std.escapeStringJson(str),
    #|
    #|  escapeStringBash(str_)::
    #|    local str = std.toString(str_);
    #|    "'%s'" % std.strReplace(str, "'", "'\"'\"'"),
    #|
    #|  escapeStringDollars(str_)::
    #|    local str = std.toString(str_);
    #|    std.strReplace(str, '$', '$$'),
    #|
    #|  local xml_escapes = {
    #|    '<': '<',
    #|    '>': '>',
    #|    '&': '&',
    #|    '"': '"',
    #|    "'": ''',
    #|  },
    #|
    #|  escapeStringXML(str_)::
    #|    local str = std.toString(str_);
    #|    std.join('', [std.get(xml_escapes, ch, ch) for ch in std.stringChars(str)]),
    #|
    #|  manifestJson(value):: std.manifestJsonEx(value, '    '),
    #|
    #|  manifestJsonMinified(value):: std.manifestJsonEx(value, '', '', ':'),
    #|
    #|  manifestJsonEx(value, indent, newline='\n', key_val_sep=': ')::
    #|    local aux(v, path, cindent) =
    #|      if v == true then
    #|        'true'
    #|      else if v == false then
    #|        'false'
    #|      else if v == null then
    #|        'null'
    #|      else if std.isNumber(v) then
    #|        '' + v
    #|      else if std.isString(v) then
    #|        std.escapeStringJson(v)
    #|      else if std.isFunction(v) then
    #|        error 'Tried to manifest function at ' + path
    #|      else if std.isArray(v) then
    #|        local range = std.range(0, std.length(v) - 1);
    #|        local new_indent = cindent + indent;
    #|        local lines = ['[' + newline]
    #|                      + std.join([',' + newline],
    #|                                 [
    #|                                   [new_indent + aux(v[i], path + [i], new_indent)]
    #|                                   for i in range
    #|                                 ])
    #|                      + [newline + cindent + ']'];
    #|        std.join('', lines)
    #|      else if std.isObject(v) then
    #|        local lines = ['{' + newline]
    #|                      + std.join([',' + newline],
    #|                                 [
    #|                                   [cindent + indent + std.escapeStringJson(k) + key_val_sep
    #|                                    + aux(v[k], path + [k], cindent + indent)]
    #|                                   for k in std.objectFields(v)
    #|                                 ])
    #|                      + [newline + cindent + '}'];
    #|        std.join('', lines);
    #|    aux(value, [], ''),
    #|
    #|  manifestYamlDoc(value, indent_array_in_object=false, quote_keys=true)::
    #|    local onlyChars(charSet, strSet) =
    #|      if std.length(std.setInter(charSet, strSet)) == std.length(strSet) then
    #|        true
    #|      else false;
    #|    local isReserved(key) =
    #|      // NOTE: These values are checked for case insensitively.
    #|      // While this approach results in some false positives, it eliminates
    #|      // the risk of missing a permutation.
    #|      local reserved = [
    #|        // Boolean types taken from https://yaml.org/type/bool.html
    #|        'true',
    #|        'false',
    #|        'yes',
    #|        'no',
    #|        'on',
    #|        'off',
    #|        'y',
    #|        'n',
    #|        // Numerical words taken from https://yaml.org/type/float.html
    #|        '.nan',
    #|        '-.inf',
    #|        '+.inf',
    #|        '.inf',
    #|        'null',
    #|        // Invalid keys that contain no invalid characters
    #|        '-',
    #|        '---',
    #|        '',
    #|      ];
    #|      local bad = [word for word in reserved if word == std.asciiLower(key)];
    #|      if std.length(bad) > 0 then
    #|        true
    #|      else false;
    #|    local typeMatch(m_key, type) =
    #|      // Look for positive or negative numerical types (ex: 0x)
    #|      if std.substr(m_key, 0, 2) == type || std.substr(m_key, 0, 3) == '-' + type then
    #|        true
    #|      else false;
    #|    local bareSafe(key) =
    #|      /*
    #|      For a key to be considered safe to emit without quotes, the following must be true
    #|        - All characters must match [a-zA-Z0-9_/\-]
    #|        - Not match the integer format defined in https://yaml.org/type/int.html
    #|        - Not match the float format defined in https://yaml.org/type/float.html
    #|        - Not match the timestamp format defined in https://yaml.org/type/timestamp.html
    #|        - Not match the boolean format defined in https://yaml.org/type/bool.html
    #|        - Not match the null format defined in https://yaml.org/type/null.html
    #|        - Not match (ignoring case) any reserved words which pass the above tests.
    #|          Reserved words are defined in isReserved() above.
    #|
    #|      Since the remaining YAML types require characters outside the set chosen as valid
    #|      for the elimination of quotes from the YAML output, the remaining types listed at
    #|      https://yaml.org/type/ are by default always quoted.
    #|      */
    #|      local letters = std.set(std.stringChars('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_-/'));
    #|      local digits = std.set(std.stringChars('0123456789'));
    #|      local intChars = std.set(digits + std.stringChars('_-'));
    #|      local binChars = std.set(intChars + std.stringChars('b'));
    #|      local hexChars = std.set(digits + std.stringChars('abcdefx_-'));
    #|      local floatChars = std.set(digits + std.stringChars('e._-'));
    #|      local dateChars = std.set(digits + std.stringChars('-'));
    #|      local safeChars = std.set(letters + floatChars);
    #|      local keyLc = std.asciiLower(key);
    #|      local keyChars = std.stringChars(key);
    #|      local keySet = std.set(keyChars);
    #|      local keySetLc = std.set(std.stringChars(keyLc));
    #|      // Check for unsafe characters
    #|      if !onlyChars(safeChars, keySet) then
    #|        false
    #|      // Check for reserved words
    #|      else if isReserved(key) then
    #|        false
    #|      /* Check for timestamp values.  Since spaces and colons are already forbidden,
    #|         all that could potentially pass is the standard date format (ex MM-DD-YYYY, YYYY-DD-MM, etc).
    #|         This check is even more conservative: Keys that meet all of the following:
    #|           - all characters match [0-9\-]
    #|           - has exactly 2 dashes
    #|         are considered dates.
    #|      */
    #|      else if onlyChars(dateChars, keySet)
    #|              && std.length(std.findSubstr('-', key)) == 2 then
    #|        false
    #|      /* Check for integers.  Keys that meet all of the following:
    #|           - all characters match [0-9_\-]
    #|           - has at most 1 dash
    #|         are considered integers.
    #|      */
    #|      else if onlyChars(intChars, keySetLc)
    #|              && std.length(std.findSubstr('-', key)) < 2 then
    #|        false
    #|      /* Check for binary integers.  Keys that meet all of the following:
    #|           - all characters match [0-9b_\-]
    #|           - has at least 3 characters
    #|           - starts with (-)0b
    #|         are considered binary integers.
    #|      */
    #|      else if onlyChars(binChars, keySetLc)
    #|              && std.length(key) > 2
    #|              && typeMatch(key, '0b') then
    #|        false
    #|      /* Check for floats. Keys that meet all of the following:
    #|           - all characters match [0-9e._\-]
    #|           - has at most a single period
    #|           - has at most two dashes
    #|           - has at most 1 'e'
    #|         are considered floats.
    #|      */
    #|      else if onlyChars(floatChars, keySetLc)
    #|              && std.length(std.findSubstr('.', key)) == 1
    #|              && std.length(std.findSubstr('-', key)) < 3
    #|              && std.length(std.findSubstr('e', keyLc)) < 2 then
    #|        false
    #|      /* Check for hexadecimals.  Keys that meet all of the following:
    #|           - all characters match [0-9a-fx_\-]
    #|           - has at most 1 dash
    #|           - has at least 3 characters
    #|           - starts with (-)0x
    #|         are considered hexadecimals.
    #|      */
    #|      else if onlyChars(hexChars, keySetLc)
    #|              && std.length(std.findSubstr('-', key)) < 2
    #|              && std.length(keyChars) > 2
    #|              && typeMatch(key, '0x') then
    #|        false
    #|      // All checks pass. Key is safe for emission without quotes.
    #|      else true;
    #|    local escapeKeyYaml(key) =
    #|      if bareSafe(key) then key else std.escapeStringJson(key);
    #|    local aux(v, path, cindent) =
    #|      if v == true then
    #|        'true'
    #|      else if v == false then
    #|        'false'
    #|      else if v == null then
    #|        'null'
    #|      else if std.isNumber(v) then
    #|        '' + v
    #|      else if std.isString(v) then
    #|        local len = std.length(v);
    #|        if len == 0 then
    #|          '""'
    #|        else if v[len - 1] == '\n' then
    #|          local split = std.split(v, '\n');
    #|          std.join('\n' + cindent + '  ', ['|'] + split[0:std.length(split) - 1])
    #|        else
    #|          std.escapeStringJson(v)
    #|      else if std.isFunction(v) then
    #|        error 'Tried to manifest function at ' + path
    #|      else if std.isArray(v) then
    #|        if std.length(v) == 0 then
    #|          '[]'
    #|        else
    #|          local params(value) =
    #|            if std.isArray(value) && std.length(value) > 0 then {
    #|              // While we could avoid the new line, it yields YAML that is
    #|              // hard to read, e.g.:
    #|              // - - - 1
    #|              //     - 2
    #|              //   - - 3
    #|              //     - 4
    #|              new_indent: cindent + '  ',
    #|              space: '\n' + self.new_indent,
    #|            } else if std.isObject(value) && std.length(value) > 0 then {
    #|              new_indent: cindent + '  ',
    #|              // In this case we can start on the same line as the - because the indentation
    #|              // matches up then.  The converse is not true, because fields are not always
    #|              // 1 character long.
    #|              space: ' ',
    #|            } else {
    #|              // In this case, new_indent is only used in the case of multi-line strings.
    #|              new_indent: cindent,
    #|              space: ' ',
    #|            };
    #|          local range = std.range(0, std.length(v) - 1);
    #|          local parts = [
    #|            '-' + param.space + aux(v[i], path + [i], param.new_indent)
    #|            for i in range
    #|            for param in [params(v[i])]
    #|          ];
    #|          std.join('\n' + cindent, parts)
    #|      else if std.isObject(v) then
    #|        if std.length(v) == 0 then
    #|          '{}'
    #|        else
    #|          local params(value) =
    #|            if std.isArray(value) && std.length(value) > 0 then {
    #|              // Not indenting allows e.g.
    #|              // ports:
    #|              // - 80
    #|              // instead of
    #|              // ports:
    #|              //   - 80
    #|              new_indent: if indent_array_in_object then cindent + '  ' else cindent,
    #|              space: '\n' + self.new_indent,
    #|            } else if std.isObject(value) && std.length(value) > 0 then {
    #|              new_indent: cindent + '  ',
    #|              space: '\n' + self.new_indent,
    #|            } else {
    #|              // In this case, new_indent is only used in the case of multi-line strings.
    #|              new_indent: cindent,
    #|              space: ' ',
    #|            };
    #|          local lines = [
    #|            (if quote_keys then std.escapeStringJson(k) else escapeKeyYaml(k)) + ':' + param.space + aux(v[k], path + [k], param.new_indent)
    #|            for k in std.objectFields(v)
    #|            for param in [params(v[k])]
    #|          ];
    #|          std.join('\n' + cindent, lines);
    #|    aux(value, [], ''),
    #|
    #|  manifestYamlStream(value, indent_array_in_object=false, c_document_end=true, quote_keys=true)::
    #|    if !std.isArray(value) then
    #|      error 'manifestYamlStream only takes arrays, got ' + std.type(value)
    #|    else
    #|      '---\n' + std.join(
    #|        '\n---\n', [std.manifestYamlDoc(e, indent_array_in_object, quote_keys) for e in value]
    #|      ) + if c_document_end then '\n...\n' else '\n',
    #|
    #|
    #|  manifestPython(v)::
    #|    if std.isObject(v) then
    #|      local fields = [
    #|        '%s: %s' % [std.escapeStringPython(k), std.manifestPython(v[k])]
    #|        for k in std.objectFields(v)
    #|      ];
    #|      '{%s}' % [std.join(', ', fields)]
    #|    else if std.isArray(v) then
    #|      '[%s]' % [std.join(', ', [std.manifestPython(v2) for v2 in v])]
    #|    else if std.isString(v) then
    #|      '%s' % [std.escapeStringPython(v)]
    #|    else if std.isFunction(v) then
    #|      error 'cannot manifest function'
    #|    else if std.isNumber(v) then
    #|      std.toString(v)
    #|    else if v == true then
    #|      'True'
    #|    else if v == false then
    #|      'False'
    #|    else if v == null then
    #|      'None',
    #|
    #|  manifestPythonVars(conf)::
    #|    local vars = ['%s = %s' % [k, std.manifestPython(conf[k])] for k in std.objectFields(conf)];
    #|    std.join('\n', vars + ['']),
    #|
    #|  manifestXmlJsonml(value)::
    #|    if !std.isArray(value) then
    #|      error 'Expected a JSONML value (an array), got %s' % std.type(value)
    #|    else
    #|      local aux(v) =
    #|        if std.isString(v) then
    #|          v
    #|        else
    #|          local tag = v[0];
    #|          local has_attrs = std.length(v) > 1 && std.isObject(v[1]);
    #|          local attrs = if has_attrs then v[1] else {};
    #|          local children = if has_attrs then v[2:] else v[1:];
    #|          local attrs_str =
    #|            std.join('', [' %s="%s"' % [k, attrs[k]] for k in std.objectFields(attrs)]);
    #|          std.deepJoin(['<', tag, attrs_str, '>', [aux(x) for x in children], '']);
    #|
    #|      aux(value),
    #|
    #|  local base64_table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
    #|  local base64_inv = { [base64_table[i]]: i for i in std.range(0, 63) },
    #|
    #|  base64(input)::
    #|    local bytes =
    #|      if std.isString(input) then
    #|        std.map(std.codepoint, input)
    #|      else
    #|        input;
    #|
    #|    local aux(arr, i, r) =
    #|      if i >= std.length(arr) then
    #|        r
    #|      else if i + 1 >= std.length(arr) then
    #|        local str =
    #|          // 6 MSB of i
    #|          base64_table[(arr[i] & 252) >> 2] +
    #|          // 2 LSB of i
    #|          base64_table[(arr[i] & 3) << 4] +
    #|          '==';
    #|        aux(arr, i + 3, r + str) tailstrict
    #|      else if i + 2 >= std.length(arr) then
    #|        local str =
    #|          // 6 MSB of i
    #|          base64_table[(arr[i] & 252) >> 2] +
    #|          // 2 LSB of i, 4 MSB of i+1
    #|          base64_table[(arr[i] & 3) << 4 | (arr[i + 1] & 240) >> 4] +
    #|          // 4 LSB of i+1
    #|          base64_table[(arr[i + 1] & 15) << 2] +
    #|          '=';
    #|        aux(arr, i + 3, r + str) tailstrict
    #|      else
    #|        local str =
    #|          // 6 MSB of i
    #|          base64_table[(arr[i] & 252) >> 2] +
    #|          // 2 LSB of i, 4 MSB of i+1
    #|          base64_table[(arr[i] & 3) << 4 | (arr[i + 1] & 240) >> 4] +
    #|          // 4 LSB of i+1, 2 MSB of i+2
    #|          base64_table[(arr[i + 1] & 15) << 2 | (arr[i + 2] & 192) >> 6] +
    #|          // 6 LSB of i+2
    #|          base64_table[(arr[i + 2] & 63)];
    #|        aux(arr, i + 3, r + str) tailstrict;
    #|
    #|    local sanity = std.all([a < 256 for a in bytes]);
    #|    if !sanity then
    #|      error 'Can only base64 encode strings / arrays of single bytes.'
    #|    else
    #|      aux(bytes, 0, ''),
    #|
    #|
    #|  base64DecodeBytes(str)::
    #|    if std.length(str) % 4 != 0 then
    #|      error 'Not a base64 encoded string "%s"' % str
    #|    else
    #|      local aux(str, i, r) =
    #|        if i >= std.length(str) then
    #|          r
    #|        else
    #|          // all 6 bits of i, 2 MSB of i+1
    #|          local n1 = [base64_inv[str[i]] << 2 | (base64_inv[str[i + 1]] >> 4)];
    #|          // 4 LSB of i+1, 4MSB of i+2
    #|          local n2 =
    #|            if str[i + 2] == '=' then []
    #|            else [(base64_inv[str[i + 1]] & 15) << 4 | (base64_inv[str[i + 2]] >> 2)];
    #|          // 2 LSB of i+2, all 6 bits of i+3
    #|          local n3 =
    #|            if str[i + 3] == '=' then []
    #|            else [(base64_inv[str[i + 2]] & 3) << 6 | base64_inv[str[i + 3]]];
    #|          aux(str, i + 4, r + n1 + n2 + n3) tailstrict;
    #|      aux(str, 0, []),
    #|
    #|  base64Decode(str)::
    #|    local bytes = std.base64DecodeBytes(str);
    #|    std.join('', std.map(std.char, bytes)),
    #|
    #|  reverse(arr)::
    #|    local l = std.length(arr);
    #|    std.makeArray(l, function(i) arr[l - i - 1]),
    #|
    #|  // Merge-sort for long arrays and naive quicksort for shorter ones
    #|  sort(arr, keyF=id)::
    #|    local quickSort(arr, keyF=id) =
    #|      local l = std.length(arr);
    #|      if std.length(arr) <= 1 then
    #|        arr
    #|      else
    #|        local pos = 0;
    #|        local pivot = keyF(arr[pos]);
    #|        local rest = std.makeArray(l - 1, function(i) if i < pos then arr[i] else arr[i + 1]);
    #|        local left = std.filter(function(x) keyF(x) < pivot, rest);
    #|        local right = std.filter(function(x) keyF(x) >= pivot, rest);
    #|        quickSort(left, keyF) + [arr[pos]] + quickSort(right, keyF);
    #|
    #|    local merge(a, b) =
    #|      local la = std.length(a), lb = std.length(b);
    #|      local aux(i, j, prefix) =
    #|        if i == la then
    #|          prefix + b[j:]
    #|        else if j == lb then
    #|          prefix + a[i:]
    #|        else
    #|          if keyF(a[i]) <= keyF(b[j]) then
    #|            aux(i + 1, j, prefix + [a[i]]) tailstrict
    #|          else
    #|            aux(i, j + 1, prefix + [b[j]]) tailstrict;
    #|      aux(0, 0, []);
    #|
    #|    local l = std.length(arr);
    #|    if std.length(arr) <= 30 then
    #|      quickSort(arr, keyF=keyF)
    #|    else
    #|      local mid = std.floor(l / 2);
    #|      local left = arr[:mid], right = arr[mid:];
    #|      merge(std.sort(left, keyF=keyF), std.sort(right, keyF=keyF)),
    #|
    #|  uniq(arr, keyF=id)::
    #|    local f(a, b) =
    #|      if std.length(a) == 0 then
    #|        [b]
    #|      else if keyF(a[std.length(a) - 1]) == keyF(b) then
    #|        a
    #|      else
    #|        a + [b];
    #|    std.foldl(f, arr, []),
    #|
    #|  set(arr, keyF=id)::
    #|    std.uniq(std.sort(arr, keyF), keyF),
    #|
    #|  setMember(x, arr, keyF=id)::
    #|    // TODO(dcunnin): Binary chop for O(log n) complexity
    #|    std.length(std.setInter([x], arr, keyF)) > 0,
    #|
    #|  setUnion(a, b, keyF=id)::
    #|    // NOTE: order matters, values in `a` win
    #|    local aux(a, b, i, j, acc) =
    #|      if i >= std.length(a) then
    #|        acc + b[j:]
    #|      else if j >= std.length(b) then
    #|        acc + a[i:]
    #|      else
    #|        local ak = keyF(a[i]);
    #|        local bk = keyF(b[j]);
    #|        if ak == bk then
    #|          aux(a, b, i + 1, j + 1, acc + [a[i]]) tailstrict
    #|        else if ak < bk then
    #|          aux(a, b, i + 1, j, acc + [a[i]]) tailstrict
    #|        else
    #|          aux(a, b, i, j + 1, acc + [b[j]]) tailstrict;
    #|    aux(a, b, 0, 0, []),
    #|
    #|  setInter(a, b, keyF=id)::
    #|    local aux(a, b, i, j, acc) =
    #|      if i >= std.length(a) || j >= std.length(b) then
    #|        acc
    #|      else
    #|        if keyF(a[i]) == keyF(b[j]) then
    #|          aux(a, b, i + 1, j + 1, acc + [a[i]]) tailstrict
    #|        else if keyF(a[i]) < keyF(b[j]) then
    #|          aux(a, b, i + 1, j, acc) tailstrict
    #|        else
    #|          aux(a, b, i, j + 1, acc) tailstrict;
    #|    aux(a, b, 0, 0, []) tailstrict,
    #|
    #|  setDiff(a, b, keyF=id)::
    #|    local aux(a, b, i, j, acc) =
    #|      if i >= std.length(a) then
    #|        acc
    #|      else if j >= std.length(b) then
    #|        acc + a[i:]
    #|      else
    #|        if keyF(a[i]) == keyF(b[j]) then
    #|          aux(a, b, i + 1, j + 1, acc) tailstrict
    #|        else if keyF(a[i]) < keyF(b[j]) then
    #|          aux(a, b, i + 1, j, acc + [a[i]]) tailstrict
    #|        else
    #|          aux(a, b, i, j + 1, acc) tailstrict;
    #|    aux(a, b, 0, 0, []) tailstrict,
    #|
    #|  mergePatch(target, patch)::
    #|    if std.isObject(patch) then
    #|      local target_object =
    #|        if std.isObject(target) then target else {};
    #|
    #|      local target_fields =
    #|        if std.isObject(target_object) then std.objectFields(target_object) else [];
    #|
    #|      local null_fields = [k for k in std.objectFields(patch) if patch[k] == null];
    #|      local both_fields = std.setUnion(target_fields, std.objectFields(patch));
    #|
    #|      {
    #|        [k]:
    #|          if !std.objectHas(patch, k) then
    #|            target_object[k]
    #|          else if !std.objectHas(target_object, k) then
    #|            std.mergePatch(null, patch[k]) tailstrict
    #|          else
    #|            std.mergePatch(target_object[k], patch[k]) tailstrict
    #|        for k in std.setDiff(both_fields, null_fields)
    #|      }
    #|    else
    #|      patch,
    #|
    #|  get(o, f, default=null, inc_hidden=true)::
    #|    if std.objectHasEx(o, f, inc_hidden) then o[f] else default,
    #|
    #|  objectFields(o)::
    #|    std.objectFieldsEx(o, false),
    #|
    #|  objectFieldsAll(o)::
    #|    std.objectFieldsEx(o, true),
    #|
    #|  objectHas(o, f)::
    #|    std.objectHasEx(o, f, false),
    #|
    #|  objectHasAll(o, f)::
    #|    std.objectHasEx(o, f, true),
    #|
    #|  objectValues(o)::
    #|    [o[k] for k in std.objectFields(o)],
    #|
    #|  objectValuesAll(o)::
    #|    [o[k] for k in std.objectFieldsAll(o)],
    #|
    #|  objectKeysValues(o)::
    #|    [{ key: k, value: o[k] } for k in std.objectFields(o)],
    #|
    #|  objectKeysValuesAll(o)::
    #|    [{ key: k, value: o[k] } for k in std.objectFieldsAll(o)],
    #|
    #|  equals(a, b)::
    #|    local ta = std.type(a);
    #|    local tb = std.type(b);
    #|    if !std.primitiveEquals(ta, tb) then
    #|      false
    #|    else
    #|      if std.primitiveEquals(ta, 'array') then
    #|        local la = std.length(a);
    #|        if !std.primitiveEquals(la, std.length(b)) then
    #|          false
    #|        else
    #|          local aux(a, b, i) =
    #|            if i >= la then
    #|              true
    #|            else if a[i] != b[i] then
    #|              false
    #|            else
    #|              aux(a, b, i + 1) tailstrict;
    #|          aux(a, b, 0)
    #|      else if std.primitiveEquals(ta, 'object') then
    #|        local fields = std.objectFields(a);
    #|        local lfields = std.length(fields);
    #|        if fields != std.objectFields(b) then
    #|          false
    #|        else
    #|          local aux(a, b, i) =
    #|            if i >= lfields then
    #|              true
    #|            else if local f = fields[i]; a[f] != b[f] then
    #|              false
    #|            else
    #|              aux(a, b, i + 1) tailstrict;
    #|          aux(a, b, 0)
    #|      else
    #|        std.primitiveEquals(a, b),
    #|
    #|
    #|  resolvePath(f, r)::
    #|    local arr = std.split(f, '/');
    #|    std.join('/', std.makeArray(std.length(arr) - 1, function(i) arr[i]) + [r]),
    #|
    #|  prune(a)::
    #|    local isContent(b) =
    #|      if b == null then
    #|        false
    #|      else if std.isArray(b) then
    #|        std.length(b) > 0
    #|      else if std.isObject(b) then
    #|        std.length(b) > 0
    #|      else
    #|        true;
    #|    if std.isArray(a) then
    #|      [std.prune(x) for x in a if isContent($.prune(x))]
    #|    else if std.isObject(a) then {
    #|      [x]: $.prune(a[x])
    #|      for x in std.objectFields(a)
    #|      if isContent(std.prune(a[x]))
    #|    } else
    #|      a,
    #|
    #|  findSubstr(pat, str)::
    #|    if !std.isString(pat) then
    #|      error 'findSubstr first parameter should be a string, got ' + std.type(pat)
    #|    else if !std.isString(str) then
    #|      error 'findSubstr second parameter should be a string, got ' + std.type(str)
    #|    else
    #|      local pat_len = std.length(pat);
    #|      local str_len = std.length(str);
    #|      if pat_len == 0 || str_len == 0 || pat_len > str_len then
    #|        []
    #|      else
    #|        std.filter(function(i) str[i:i + pat_len] == pat, std.range(0, str_len - pat_len)),
    #|
    #|  find(value, arr)::
    #|    if !std.isArray(arr) then
    #|      error 'find second parameter should be an array, got ' + std.type(arr)
    #|    else
    #|      std.filter(function(i) arr[i] == value, std.range(0, std.length(arr) - 1)),
    #|
    #|  all(arr)::
    #|    assert std.isArray(arr) : 'all() parameter should be an array, got ' + std.type(arr);
    #|    local arrLen = std.length(arr);
    #|    local aux(idx) =
    #|      if idx >= arrLen then
    #|        true
    #|      else
    #|        local e = arr[idx];
    #|        assert std.isBoolean(e) : 'element "%s" of type %s is not a boolean' % [e, std.type(e)];
    #|        if !e then
    #|          false
    #|        else
    #|          aux(idx + 1) tailstrict;
    #|    aux(0),
    #|
    #|  any(arr)::
    #|    assert std.isArray(arr) : 'any() parameter should be an array, got ' + std.type(arr);
    #|    local arrLen = std.length(arr);
    #|    local aux(idx) =
    #|      if idx >= arrLen then
    #|        false
    #|      else
    #|        local e = arr[idx];
    #|        assert std.isBoolean(e) : 'element "%s" of type %s is not a boolean' % [e, std.type(e)];
    #|        if e then
    #|          true
    #|        else
    #|          aux(idx + 1) tailstrict;
    #|    aux(0),
    #|
    #|  // Three way comparison.
    #|  // TODO(sbarzowski): consider exposing and documenting it properly
    #|  __compare(v1, v2)::
    #|    local t1 = std.type(v1), t2 = std.type(v2);
    #|    if t1 != t2 then
    #|      error 'Comparison requires matching types. Got ' + t1 + ' and ' + t2
    #|    else if t1 == 'array' then
    #|      std.__compare_array(v1, v2)
    #|    else if t1 == 'function' || t1 == 'object' || t1 == 'boolean' then
    #|      error 'Values of type ' + t1 + ' are not comparable.'
    #|    else if v1 < v2 then -1
    #|    else if v1 > v2 then 1
    #|    else 0,
    #|
    #|  __compare_array(arr1, arr2)::
    #|    local len1 = std.length(arr1), len2 = std.length(arr2);
    #|    local minLen = std.min(len1, len2);
    #|    local aux(i) =
    #|      if i < minLen then
    #|        local cmpRes = std.__compare(arr1[i], arr2[i]);
    #|        if cmpRes != 0 then
    #|          cmpRes
    #|        else
    #|          aux(i + 1) tailstrict
    #|      else
    #|        std.__compare(len1, len2);
    #|    aux(0),
    #|
    #|  __array_less(arr1, arr2):: std.__compare_array(arr1, arr2) == -1,
    #|  __array_greater(arr1, arr2):: std.__compare_array(arr1, arr2) == 1,
    #|  __array_less_or_equal(arr1, arr2):: std.__compare_array(arr1, arr2) <= 0,
    #|  __array_greater_or_equal(arr1, arr2):: std.__compare_array(arr1, arr2) >= 0,
    #|
    #|  sum(arr):: std.foldl(function(a, b) a + b, arr, 0),
    #|
    #|  avg(arr)::
    #|    if std.length(arr) == 0 then
    #|      error 'Cannot calculate average of an empty array.'
    #|    else
    #|      std.sum(arr)/std.length(arr),
    #|
    #|  minArray(arr, keyF=id, onEmpty=error 'Expected at least one element in array. Got none')::
    #|    if std.length(arr) == 0 then
    #|      onEmpty
    #|    else
    #|      local minVal = arr[0];
    #|      local minFn(a, b) =
    #|        if std.__compare(keyF(a), keyF(b)) > 0 then
    #|          b
    #|        else
    #|          a;
    #|      std.foldl(minFn, arr, minVal),
    #|
    #|  maxArray(arr, keyF=id, onEmpty=error 'Expected at least one element in array. Got none')::
    #|    if std.length(arr) == 0 then
    #|      onEmpty
    #|    else
    #|      local maxVal = arr[0];
    #|      local maxFn(a, b) =
    #|        if std.__compare(keyF(a), keyF(b)) < 0 then
    #|          b
    #|        else
    #|          a;
    #|      std.foldl(maxFn, arr, maxVal),
    #|
    #|  xor(x, y):: x != y,
    #|
    #|  xnor(x, y):: x == y,
    #|
    #|  round(x):: std.floor(x + 0.5),
    #|
    #|  isEmpty(str):: std.length(str) == 0,
    #|
    #|  contains(arr, elem):: std.any([e == elem for e in arr]),
    #|
    #|  equalsIgnoreCase(str1, str2):: std.asciiLower(str1) == std.asciiLower(str2),
    #|
    #|  isEven(x):: std.round(x) % 2 == 0,
    #|  isOdd(x):: std.round(x) % 2 != 0,
    #|  isInteger(x):: std.round(x) == x,
    #|  isDecimal(x):: std.round(x) != x,
    #|  
    #|  removeAt(arr, at):: [
    #|    arr[i],
    #|    for i in std.range(0, std.length(arr) - 1)
    #|    if i != at
    #|  ],
    #|
    #|  remove(arr, elem):: 
    #|    local indexes = std.find(elem, arr);
    #|    if std.length(indexes) == 0
    #|    then
    #|      arr
    #|    else
    #|      std.removeAt(arr, indexes[0])
    #|  ,
    #|
    #|  objectRemoveKey(obj, key):: {
    #|    [k]: obj[k],
    #|    for k in std.objectFields(obj)
    #|    if k != key
    #|  },
    #|
    #|  sha1(str):: go_only_function,
    #|  sha256(str):: go_only_function,
    #|  sha512(str):: go_only_function,
    #|  sha3(str):: go_only_function,
    #|
    #|  trim(str):: std.stripChars(str, ' \t\n\f\r\u0085\u00A0'),
    #|}
    #|
    #|
  )
}