| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `crates/stdx/src/lib.rs`."><title>lib.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="stdx" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0 (1159e78c4 2025-09-14)" data-channel="1.90.0" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../static.files/storage-68b7e25d.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">stdx/</div>lib.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="doccomment">//! Missing batteries for standard libraries. |
| <a href=#2 id=2 data-nosnippet>2</a> |
| <a href=#3 id=3 data-nosnippet>3</a></span><span class="kw">use </span>std::io <span class="kw">as </span>sio; |
| <a href=#4 id=4 data-nosnippet>4</a><span class="kw">use </span>std::process::Command; |
| <a href=#5 id=5 data-nosnippet>5</a><span class="kw">use </span>std::{cmp::Ordering, ops, time::Instant}; |
| <a href=#6 id=6 data-nosnippet>6</a> |
| <a href=#7 id=7 data-nosnippet>7</a><span class="kw">mod </span>macros; |
| <a href=#8 id=8 data-nosnippet>8</a> |
| <a href=#9 id=9 data-nosnippet>9</a><span class="kw">pub mod </span>anymap; |
| <a href=#10 id=10 data-nosnippet>10</a><span class="kw">pub mod </span>assert; |
| <a href=#11 id=11 data-nosnippet>11</a><span class="kw">pub mod </span>non_empty_vec; |
| <a href=#12 id=12 data-nosnippet>12</a><span class="kw">pub mod </span>panic_context; |
| <a href=#13 id=13 data-nosnippet>13</a><span class="kw">pub mod </span>process; |
| <a href=#14 id=14 data-nosnippet>14</a><span class="kw">pub mod </span>rand; |
| <a href=#15 id=15 data-nosnippet>15</a><span class="kw">pub mod </span>thread; |
| <a href=#16 id=16 data-nosnippet>16</a><span class="kw">pub mod </span>variance; |
| <a href=#17 id=17 data-nosnippet>17</a> |
| <a href=#18 id=18 data-nosnippet>18</a><span class="kw">pub use </span>itertools; |
| <a href=#19 id=19 data-nosnippet>19</a> |
| <a href=#20 id=20 data-nosnippet>20</a><span class="attr">#[inline(always)] |
| <a href=#21 id=21 data-nosnippet>21</a></span><span class="kw">pub const fn </span>is_ci() -> bool { |
| <a href=#22 id=22 data-nosnippet>22</a> <span class="macro">option_env!</span>(<span class="string">"CI"</span>).is_some() |
| <a href=#23 id=23 data-nosnippet>23</a>} |
| <a href=#24 id=24 data-nosnippet>24</a> |
| <a href=#25 id=25 data-nosnippet>25</a><span class="kw">pub fn </span>hash_once<Hasher: std::hash::Hasher + Default>(thing: <span class="kw">impl </span>std::hash::Hash) -> u64 { |
| <a href=#26 id=26 data-nosnippet>26</a> std::hash::BuildHasher::hash_one(<span class="kw-2">&</span>std::hash::BuildHasherDefault::<Hasher>::default(), thing) |
| <a href=#27 id=27 data-nosnippet>27</a>} |
| <a href=#28 id=28 data-nosnippet>28</a> |
| <a href=#29 id=29 data-nosnippet>29</a><span class="attr">#[must_use] |
| <a href=#30 id=30 data-nosnippet>30</a>#[expect(clippy::print_stderr, reason = <span class="string">"only visible to developers"</span>)] |
| <a href=#31 id=31 data-nosnippet>31</a></span><span class="kw">pub fn </span>timeit(label: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> <span class="kw">impl </span>Drop { |
| <a href=#32 id=32 data-nosnippet>32</a> <span class="kw">let </span>start = Instant::now(); |
| <a href=#33 id=33 data-nosnippet>33</a> defer(<span class="kw">move </span>|| <span class="macro">eprintln!</span>(<span class="string">"{}: {:.2}"</span>, label, start.elapsed().as_nanos())) |
| <a href=#34 id=34 data-nosnippet>34</a>} |
| <a href=#35 id=35 data-nosnippet>35</a> |
| <a href=#36 id=36 data-nosnippet>36</a><span class="doccomment">/// Prints backtrace to stderr, useful for debugging. |
| <a href=#37 id=37 data-nosnippet>37</a></span><span class="attr">#[expect(clippy::print_stderr, reason = <span class="string">"only visible to developers"</span>)] |
| <a href=#38 id=38 data-nosnippet>38</a></span><span class="kw">pub fn </span>print_backtrace() { |
| <a href=#39 id=39 data-nosnippet>39</a> <span class="attr">#[cfg(feature = <span class="string">"backtrace"</span>)] |
| <a href=#40 id=40 data-nosnippet>40</a> </span><span class="macro">eprintln!</span>(<span class="string">"{:?}"</span>, backtrace::Backtrace::new()); |
| <a href=#41 id=41 data-nosnippet>41</a> |
| <a href=#42 id=42 data-nosnippet>42</a> <span class="attr">#[cfg(not(feature = <span class="string">"backtrace"</span>))] |
| <a href=#43 id=43 data-nosnippet>43</a> </span><span class="macro">eprintln!</span>( |
| <a href=#44 id=44 data-nosnippet>44</a> <span class="string">r#"Enable the backtrace feature. |
| <a href=#45 id=45 data-nosnippet>45</a>Uncomment `default = [ "backtrace" ]` in `crates/stdx/Cargo.toml`. |
| <a href=#46 id=46 data-nosnippet>46</a>"# |
| <a href=#47 id=47 data-nosnippet>47</a> </span>); |
| <a href=#48 id=48 data-nosnippet>48</a>} |
| <a href=#49 id=49 data-nosnippet>49</a> |
| <a href=#50 id=50 data-nosnippet>50</a><span class="kw">pub trait </span>TupleExt { |
| <a href=#51 id=51 data-nosnippet>51</a> <span class="kw">type </span>Head; |
| <a href=#52 id=52 data-nosnippet>52</a> <span class="kw">type </span>Tail; |
| <a href=#53 id=53 data-nosnippet>53</a> <span class="kw">fn </span>head(<span class="self">self</span>) -> <span class="self">Self</span>::Head; |
| <a href=#54 id=54 data-nosnippet>54</a> <span class="kw">fn </span>tail(<span class="self">self</span>) -> <span class="self">Self</span>::Tail; |
| <a href=#55 id=55 data-nosnippet>55</a>} |
| <a href=#56 id=56 data-nosnippet>56</a> |
| <a href=#57 id=57 data-nosnippet>57</a><span class="kw">impl</span><T, U> TupleExt <span class="kw">for </span>(T, U) { |
| <a href=#58 id=58 data-nosnippet>58</a> <span class="kw">type </span>Head = T; |
| <a href=#59 id=59 data-nosnippet>59</a> <span class="kw">type </span>Tail = U; |
| <a href=#60 id=60 data-nosnippet>60</a> <span class="kw">fn </span>head(<span class="self">self</span>) -> <span class="self">Self</span>::Head { |
| <a href=#61 id=61 data-nosnippet>61</a> <span class="self">self</span>.<span class="number">0 |
| <a href=#62 id=62 data-nosnippet>62</a> </span>} |
| <a href=#63 id=63 data-nosnippet>63</a> <span class="kw">fn </span>tail(<span class="self">self</span>) -> <span class="self">Self</span>::Tail { |
| <a href=#64 id=64 data-nosnippet>64</a> <span class="self">self</span>.<span class="number">1 |
| <a href=#65 id=65 data-nosnippet>65</a> </span>} |
| <a href=#66 id=66 data-nosnippet>66</a>} |
| <a href=#67 id=67 data-nosnippet>67</a> |
| <a href=#68 id=68 data-nosnippet>68</a><span class="kw">impl</span><T, U, V> TupleExt <span class="kw">for </span>(T, U, V) { |
| <a href=#69 id=69 data-nosnippet>69</a> <span class="kw">type </span>Head = T; |
| <a href=#70 id=70 data-nosnippet>70</a> <span class="kw">type </span>Tail = V; |
| <a href=#71 id=71 data-nosnippet>71</a> <span class="kw">fn </span>head(<span class="self">self</span>) -> <span class="self">Self</span>::Head { |
| <a href=#72 id=72 data-nosnippet>72</a> <span class="self">self</span>.<span class="number">0 |
| <a href=#73 id=73 data-nosnippet>73</a> </span>} |
| <a href=#74 id=74 data-nosnippet>74</a> <span class="kw">fn </span>tail(<span class="self">self</span>) -> <span class="self">Self</span>::Tail { |
| <a href=#75 id=75 data-nosnippet>75</a> <span class="self">self</span>.<span class="number">2 |
| <a href=#76 id=76 data-nosnippet>76</a> </span>} |
| <a href=#77 id=77 data-nosnippet>77</a>} |
| <a href=#78 id=78 data-nosnippet>78</a> |
| <a href=#79 id=79 data-nosnippet>79</a><span class="kw">pub fn </span>to_lower_snake_case(s: <span class="kw-2">&</span>str) -> String { |
| <a href=#80 id=80 data-nosnippet>80</a> to_snake_case(s, char::to_lowercase) |
| <a href=#81 id=81 data-nosnippet>81</a>} |
| <a href=#82 id=82 data-nosnippet>82</a><span class="kw">pub fn </span>to_upper_snake_case(s: <span class="kw-2">&</span>str) -> String { |
| <a href=#83 id=83 data-nosnippet>83</a> to_snake_case(s, char::to_uppercase) |
| <a href=#84 id=84 data-nosnippet>84</a>} |
| <a href=#85 id=85 data-nosnippet>85</a> |
| <a href=#86 id=86 data-nosnippet>86</a><span class="comment">// Code partially taken from rust/compiler/rustc_lint/src/nonstandard_style.rs |
| <a href=#87 id=87 data-nosnippet>87</a>// commit: 9626f2b |
| <a href=#88 id=88 data-nosnippet>88</a></span><span class="kw">fn </span>to_snake_case<F, I>(<span class="kw-2">mut </span>s: <span class="kw-2">&</span>str, change_case: F) -> String |
| <a href=#89 id=89 data-nosnippet>89</a><span class="kw">where |
| <a href=#90 id=90 data-nosnippet>90</a> </span>F: Fn(char) -> I, |
| <a href=#91 id=91 data-nosnippet>91</a> I: Iterator<Item = char>, |
| <a href=#92 id=92 data-nosnippet>92</a>{ |
| <a href=#93 id=93 data-nosnippet>93</a> <span class="kw">let </span><span class="kw-2">mut </span>words = <span class="macro">vec!</span>[]; |
| <a href=#94 id=94 data-nosnippet>94</a> |
| <a href=#95 id=95 data-nosnippet>95</a> <span class="comment">// Preserve leading underscores |
| <a href=#96 id=96 data-nosnippet>96</a> </span>s = s.trim_start_matches(|c: char| { |
| <a href=#97 id=97 data-nosnippet>97</a> <span class="kw">if </span>c == <span class="string">'_' </span>{ |
| <a href=#98 id=98 data-nosnippet>98</a> words.push(String::new()); |
| <a href=#99 id=99 data-nosnippet>99</a> <span class="bool-val">true |
| <a href=#100 id=100 data-nosnippet>100</a> </span>} <span class="kw">else </span>{ |
| <a href=#101 id=101 data-nosnippet>101</a> <span class="bool-val">false |
| <a href=#102 id=102 data-nosnippet>102</a> </span>} |
| <a href=#103 id=103 data-nosnippet>103</a> }); |
| <a href=#104 id=104 data-nosnippet>104</a> |
| <a href=#105 id=105 data-nosnippet>105</a> <span class="kw">for </span>s <span class="kw">in </span>s.split(<span class="string">'_'</span>) { |
| <a href=#106 id=106 data-nosnippet>106</a> <span class="kw">let </span><span class="kw-2">mut </span>last_upper = <span class="bool-val">false</span>; |
| <a href=#107 id=107 data-nosnippet>107</a> <span class="kw">let </span><span class="kw-2">mut </span>buf = String::new(); |
| <a href=#108 id=108 data-nosnippet>108</a> |
| <a href=#109 id=109 data-nosnippet>109</a> <span class="kw">if </span>s.is_empty() { |
| <a href=#110 id=110 data-nosnippet>110</a> <span class="kw">continue</span>; |
| <a href=#111 id=111 data-nosnippet>111</a> } |
| <a href=#112 id=112 data-nosnippet>112</a> |
| <a href=#113 id=113 data-nosnippet>113</a> <span class="kw">for </span>ch <span class="kw">in </span>s.chars() { |
| <a href=#114 id=114 data-nosnippet>114</a> <span class="kw">if </span>!buf.is_empty() && buf != <span class="string">"'" </span>&& ch.is_uppercase() && !last_upper { |
| <a href=#115 id=115 data-nosnippet>115</a> words.push(buf); |
| <a href=#116 id=116 data-nosnippet>116</a> buf = String::new(); |
| <a href=#117 id=117 data-nosnippet>117</a> } |
| <a href=#118 id=118 data-nosnippet>118</a> |
| <a href=#119 id=119 data-nosnippet>119</a> last_upper = ch.is_uppercase(); |
| <a href=#120 id=120 data-nosnippet>120</a> buf.extend(change_case(ch)); |
| <a href=#121 id=121 data-nosnippet>121</a> } |
| <a href=#122 id=122 data-nosnippet>122</a> |
| <a href=#123 id=123 data-nosnippet>123</a> words.push(buf); |
| <a href=#124 id=124 data-nosnippet>124</a> } |
| <a href=#125 id=125 data-nosnippet>125</a> |
| <a href=#126 id=126 data-nosnippet>126</a> words.join(<span class="string">"_"</span>) |
| <a href=#127 id=127 data-nosnippet>127</a>} |
| <a href=#128 id=128 data-nosnippet>128</a> |
| <a href=#129 id=129 data-nosnippet>129</a><span class="comment">// Taken from rustc. |
| <a href=#130 id=130 data-nosnippet>130</a></span><span class="attr">#[must_use] |
| <a href=#131 id=131 data-nosnippet>131</a></span><span class="kw">pub fn </span>to_camel_case(ident: <span class="kw-2">&</span>str) -> String { |
| <a href=#132 id=132 data-nosnippet>132</a> ident |
| <a href=#133 id=133 data-nosnippet>133</a> .trim_matches(<span class="string">'_'</span>) |
| <a href=#134 id=134 data-nosnippet>134</a> .split(<span class="string">'_'</span>) |
| <a href=#135 id=135 data-nosnippet>135</a> .filter(|component| !component.is_empty()) |
| <a href=#136 id=136 data-nosnippet>136</a> .map(|component| { |
| <a href=#137 id=137 data-nosnippet>137</a> <span class="kw">let </span><span class="kw-2">mut </span>camel_cased_component = String::with_capacity(component.len()); |
| <a href=#138 id=138 data-nosnippet>138</a> |
| <a href=#139 id=139 data-nosnippet>139</a> <span class="kw">let </span><span class="kw-2">mut </span>new_word = <span class="bool-val">true</span>; |
| <a href=#140 id=140 data-nosnippet>140</a> <span class="kw">let </span><span class="kw-2">mut </span>prev_is_lower_case = <span class="bool-val">true</span>; |
| <a href=#141 id=141 data-nosnippet>141</a> |
| <a href=#142 id=142 data-nosnippet>142</a> <span class="kw">for </span>c <span class="kw">in </span>component.chars() { |
| <a href=#143 id=143 data-nosnippet>143</a> <span class="comment">// Preserve the case if an uppercase letter follows a lowercase letter, so that |
| <a href=#144 id=144 data-nosnippet>144</a> // `camelCase` is converted to `CamelCase`. |
| <a href=#145 id=145 data-nosnippet>145</a> </span><span class="kw">if </span>prev_is_lower_case && c.is_uppercase() { |
| <a href=#146 id=146 data-nosnippet>146</a> new_word = <span class="bool-val">true</span>; |
| <a href=#147 id=147 data-nosnippet>147</a> } |
| <a href=#148 id=148 data-nosnippet>148</a> |
| <a href=#149 id=149 data-nosnippet>149</a> <span class="kw">if </span>new_word { |
| <a href=#150 id=150 data-nosnippet>150</a> camel_cased_component.extend(c.to_uppercase()); |
| <a href=#151 id=151 data-nosnippet>151</a> } <span class="kw">else </span>{ |
| <a href=#152 id=152 data-nosnippet>152</a> camel_cased_component.extend(c.to_lowercase()); |
| <a href=#153 id=153 data-nosnippet>153</a> } |
| <a href=#154 id=154 data-nosnippet>154</a> |
| <a href=#155 id=155 data-nosnippet>155</a> prev_is_lower_case = c.is_lowercase(); |
| <a href=#156 id=156 data-nosnippet>156</a> new_word = <span class="bool-val">false</span>; |
| <a href=#157 id=157 data-nosnippet>157</a> } |
| <a href=#158 id=158 data-nosnippet>158</a> |
| <a href=#159 id=159 data-nosnippet>159</a> camel_cased_component |
| <a href=#160 id=160 data-nosnippet>160</a> }) |
| <a href=#161 id=161 data-nosnippet>161</a> .fold((String::new(), <span class="prelude-val">None</span>), |(<span class="kw-2">mut </span>acc, prev): (<span class="kw">_</span>, <span class="prelude-ty">Option</span><String>), next| { |
| <a href=#162 id=162 data-nosnippet>162</a> <span class="comment">// separate two components with an underscore if their boundary cannot |
| <a href=#163 id=163 data-nosnippet>163</a> // be distinguished using an uppercase/lowercase case distinction |
| <a href=#164 id=164 data-nosnippet>164</a> </span><span class="kw">let </span>join = prev |
| <a href=#165 id=165 data-nosnippet>165</a> .and_then(|prev| { |
| <a href=#166 id=166 data-nosnippet>166</a> <span class="kw">let </span>f = next.chars().next()<span class="question-mark">?</span>; |
| <a href=#167 id=167 data-nosnippet>167</a> <span class="kw">let </span>l = prev.chars().last()<span class="question-mark">?</span>; |
| <a href=#168 id=168 data-nosnippet>168</a> <span class="prelude-val">Some</span>(!char_has_case(l) && !char_has_case(f)) |
| <a href=#169 id=169 data-nosnippet>169</a> }) |
| <a href=#170 id=170 data-nosnippet>170</a> .unwrap_or(<span class="bool-val">false</span>); |
| <a href=#171 id=171 data-nosnippet>171</a> acc.push_str(<span class="kw">if </span>join { <span class="string">"_" </span>} <span class="kw">else </span>{ <span class="string">"" </span>}); |
| <a href=#172 id=172 data-nosnippet>172</a> acc.push_str(<span class="kw-2">&</span>next); |
| <a href=#173 id=173 data-nosnippet>173</a> (acc, <span class="prelude-val">Some</span>(next)) |
| <a href=#174 id=174 data-nosnippet>174</a> }) |
| <a href=#175 id=175 data-nosnippet>175</a> .<span class="number">0 |
| <a href=#176 id=176 data-nosnippet>176</a></span>} |
| <a href=#177 id=177 data-nosnippet>177</a> |
| <a href=#178 id=178 data-nosnippet>178</a><span class="comment">// Taken from rustc. |
| <a href=#179 id=179 data-nosnippet>179</a></span><span class="attr">#[must_use] |
| <a href=#180 id=180 data-nosnippet>180</a></span><span class="kw">pub const fn </span>char_has_case(c: char) -> bool { |
| <a href=#181 id=181 data-nosnippet>181</a> c.is_lowercase() || c.is_uppercase() |
| <a href=#182 id=182 data-nosnippet>182</a>} |
| <a href=#183 id=183 data-nosnippet>183</a> |
| <a href=#184 id=184 data-nosnippet>184</a><span class="attr">#[must_use] |
| <a href=#185 id=185 data-nosnippet>185</a></span><span class="kw">pub fn </span>is_upper_snake_case(s: <span class="kw-2">&</span>str) -> bool { |
| <a href=#186 id=186 data-nosnippet>186</a> s.chars().all(|c| c.is_uppercase() || c == <span class="string">'_' </span>|| c.is_numeric()) |
| <a href=#187 id=187 data-nosnippet>187</a>} |
| <a href=#188 id=188 data-nosnippet>188</a> |
| <a href=#189 id=189 data-nosnippet>189</a><span class="kw">pub fn </span>replace(buf: <span class="kw-2">&mut </span>String, from: char, to: <span class="kw-2">&</span>str) { |
| <a href=#190 id=190 data-nosnippet>190</a> <span class="kw">let </span>replace_count = buf.chars().filter(|<span class="kw-2">&</span>ch| ch == from).count(); |
| <a href=#191 id=191 data-nosnippet>191</a> <span class="kw">if </span>replace_count == <span class="number">0 </span>{ |
| <a href=#192 id=192 data-nosnippet>192</a> <span class="kw">return</span>; |
| <a href=#193 id=193 data-nosnippet>193</a> } |
| <a href=#194 id=194 data-nosnippet>194</a> <span class="kw">let </span>from_len = from.len_utf8(); |
| <a href=#195 id=195 data-nosnippet>195</a> <span class="kw">let </span>additional = to.len().saturating_sub(from_len); |
| <a href=#196 id=196 data-nosnippet>196</a> buf.reserve(additional * replace_count); |
| <a href=#197 id=197 data-nosnippet>197</a> |
| <a href=#198 id=198 data-nosnippet>198</a> <span class="kw">let </span><span class="kw-2">mut </span>end = buf.len(); |
| <a href=#199 id=199 data-nosnippet>199</a> <span class="kw">while let </span><span class="prelude-val">Some</span>(i) = buf[..end].rfind(from) { |
| <a href=#200 id=200 data-nosnippet>200</a> buf.replace_range(i..i + from_len, to); |
| <a href=#201 id=201 data-nosnippet>201</a> end = i; |
| <a href=#202 id=202 data-nosnippet>202</a> } |
| <a href=#203 id=203 data-nosnippet>203</a>} |
| <a href=#204 id=204 data-nosnippet>204</a> |
| <a href=#205 id=205 data-nosnippet>205</a><span class="attr">#[must_use] |
| <a href=#206 id=206 data-nosnippet>206</a></span><span class="kw">pub fn </span>trim_indent(<span class="kw-2">mut </span>text: <span class="kw-2">&</span>str) -> String { |
| <a href=#207 id=207 data-nosnippet>207</a> <span class="kw">if </span>text.starts_with(<span class="string">'\n'</span>) { |
| <a href=#208 id=208 data-nosnippet>208</a> text = <span class="kw-2">&</span>text[<span class="number">1</span>..]; |
| <a href=#209 id=209 data-nosnippet>209</a> } |
| <a href=#210 id=210 data-nosnippet>210</a> <span class="kw">let </span>indent = text |
| <a href=#211 id=211 data-nosnippet>211</a> .lines() |
| <a href=#212 id=212 data-nosnippet>212</a> .filter(|it| !it.trim().is_empty()) |
| <a href=#213 id=213 data-nosnippet>213</a> .map(|it| it.len() - it.trim_start().len()) |
| <a href=#214 id=214 data-nosnippet>214</a> .min() |
| <a href=#215 id=215 data-nosnippet>215</a> .unwrap_or(<span class="number">0</span>); |
| <a href=#216 id=216 data-nosnippet>216</a> text.split_inclusive(<span class="string">'\n'</span>) |
| <a href=#217 id=217 data-nosnippet>217</a> .map( |
| <a href=#218 id=218 data-nosnippet>218</a> |line| { |
| <a href=#219 id=219 data-nosnippet>219</a> <span class="kw">if </span>line.len() <= indent { line.trim_start_matches(<span class="string">' '</span>) } <span class="kw">else </span>{ <span class="kw-2">&</span>line[indent..] } |
| <a href=#220 id=220 data-nosnippet>220</a> }, |
| <a href=#221 id=221 data-nosnippet>221</a> ) |
| <a href=#222 id=222 data-nosnippet>222</a> .collect() |
| <a href=#223 id=223 data-nosnippet>223</a>} |
| <a href=#224 id=224 data-nosnippet>224</a> |
| <a href=#225 id=225 data-nosnippet>225</a><span class="kw">pub fn </span>equal_range_by<T, F>(slice: <span class="kw-2">&</span>[T], <span class="kw-2">mut </span>key: F) -> ops::Range<usize> |
| <a href=#226 id=226 data-nosnippet>226</a><span class="kw">where |
| <a href=#227 id=227 data-nosnippet>227</a> </span>F: FnMut(<span class="kw-2">&</span>T) -> Ordering, |
| <a href=#228 id=228 data-nosnippet>228</a>{ |
| <a href=#229 id=229 data-nosnippet>229</a> <span class="kw">let </span>start = slice.partition_point(|it| key(it) == Ordering::Less); |
| <a href=#230 id=230 data-nosnippet>230</a> <span class="kw">let </span>len = slice[start..].partition_point(|it| key(it) == Ordering::Equal); |
| <a href=#231 id=231 data-nosnippet>231</a> start..start + len |
| <a href=#232 id=232 data-nosnippet>232</a>} |
| <a href=#233 id=233 data-nosnippet>233</a> |
| <a href=#234 id=234 data-nosnippet>234</a><span class="attr">#[must_use] |
| <a href=#235 id=235 data-nosnippet>235</a></span><span class="kw">pub fn </span>defer<F: FnOnce()>(f: F) -> <span class="kw">impl </span>Drop { |
| <a href=#236 id=236 data-nosnippet>236</a> <span class="kw">struct </span>D<F: FnOnce()>(<span class="prelude-ty">Option</span><F>); |
| <a href=#237 id=237 data-nosnippet>237</a> <span class="kw">impl</span><F: FnOnce()> Drop <span class="kw">for </span>D<F> { |
| <a href=#238 id=238 data-nosnippet>238</a> <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <a href=#239 id=239 data-nosnippet>239</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(f) = <span class="self">self</span>.<span class="number">0</span>.take() { |
| <a href=#240 id=240 data-nosnippet>240</a> f(); |
| <a href=#241 id=241 data-nosnippet>241</a> } |
| <a href=#242 id=242 data-nosnippet>242</a> } |
| <a href=#243 id=243 data-nosnippet>243</a> } |
| <a href=#244 id=244 data-nosnippet>244</a> D(<span class="prelude-val">Some</span>(f)) |
| <a href=#245 id=245 data-nosnippet>245</a>} |
| <a href=#246 id=246 data-nosnippet>246</a> |
| <a href=#247 id=247 data-nosnippet>247</a><span class="doccomment">/// A [`std::process::Child`] wrapper that will kill the child on drop. |
| <a href=#248 id=248 data-nosnippet>248</a></span><span class="attr">#[cfg_attr(not(target_arch = <span class="string">"wasm32"</span>), repr(transparent))] |
| <a href=#249 id=249 data-nosnippet>249</a>#[derive(Debug)] |
| <a href=#250 id=250 data-nosnippet>250</a></span><span class="kw">pub struct </span>JodChild(<span class="kw">pub </span>std::process::Child); |
| <a href=#251 id=251 data-nosnippet>251</a> |
| <a href=#252 id=252 data-nosnippet>252</a><span class="kw">impl </span>ops::Deref <span class="kw">for </span>JodChild { |
| <a href=#253 id=253 data-nosnippet>253</a> <span class="kw">type </span>Target = std::process::Child; |
| <a href=#254 id=254 data-nosnippet>254</a> <span class="kw">fn </span>deref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>std::process::Child { |
| <a href=#255 id=255 data-nosnippet>255</a> <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0 |
| <a href=#256 id=256 data-nosnippet>256</a> </span>} |
| <a href=#257 id=257 data-nosnippet>257</a>} |
| <a href=#258 id=258 data-nosnippet>258</a> |
| <a href=#259 id=259 data-nosnippet>259</a><span class="kw">impl </span>ops::DerefMut <span class="kw">for </span>JodChild { |
| <a href=#260 id=260 data-nosnippet>260</a> <span class="kw">fn </span>deref_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>std::process::Child { |
| <a href=#261 id=261 data-nosnippet>261</a> <span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0 |
| <a href=#262 id=262 data-nosnippet>262</a> </span>} |
| <a href=#263 id=263 data-nosnippet>263</a>} |
| <a href=#264 id=264 data-nosnippet>264</a> |
| <a href=#265 id=265 data-nosnippet>265</a><span class="kw">impl </span>Drop <span class="kw">for </span>JodChild { |
| <a href=#266 id=266 data-nosnippet>266</a> <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <a href=#267 id=267 data-nosnippet>267</a> <span class="kw">_ </span>= <span class="self">self</span>.<span class="number">0</span>.kill(); |
| <a href=#268 id=268 data-nosnippet>268</a> <span class="kw">_ </span>= <span class="self">self</span>.<span class="number">0</span>.wait(); |
| <a href=#269 id=269 data-nosnippet>269</a> } |
| <a href=#270 id=270 data-nosnippet>270</a>} |
| <a href=#271 id=271 data-nosnippet>271</a> |
| <a href=#272 id=272 data-nosnippet>272</a><span class="kw">impl </span>JodChild { |
| <a href=#273 id=273 data-nosnippet>273</a> <span class="kw">pub fn </span>spawn(<span class="kw-2">mut </span>command: Command) -> sio::Result<<span class="self">Self</span>> { |
| <a href=#274 id=274 data-nosnippet>274</a> command.spawn().map(<span class="self">Self</span>) |
| <a href=#275 id=275 data-nosnippet>275</a> } |
| <a href=#276 id=276 data-nosnippet>276</a> |
| <a href=#277 id=277 data-nosnippet>277</a> <span class="attr">#[must_use] |
| <a href=#278 id=278 data-nosnippet>278</a> #[cfg(not(target_arch = <span class="string">"wasm32"</span>))] |
| <a href=#279 id=279 data-nosnippet>279</a> </span><span class="kw">pub fn </span>into_inner(<span class="self">self</span>) -> std::process::Child { |
| <a href=#280 id=280 data-nosnippet>280</a> <span class="comment">// SAFETY: repr transparent, except on WASM |
| <a href=#281 id=281 data-nosnippet>281</a> </span><span class="kw">unsafe </span>{ std::mem::transmute::<<span class="self">Self</span>, std::process::Child>(<span class="self">self</span>) } |
| <a href=#282 id=282 data-nosnippet>282</a> } |
| <a href=#283 id=283 data-nosnippet>283</a>} |
| <a href=#284 id=284 data-nosnippet>284</a> |
| <a href=#285 id=285 data-nosnippet>285</a><span class="comment">// feature: iter_order_by |
| <a href=#286 id=286 data-nosnippet>286</a>// Iterator::eq_by |
| <a href=#287 id=287 data-nosnippet>287</a></span><span class="kw">pub fn </span>iter_eq_by<I, I2, F>(this: I2, other: I, <span class="kw-2">mut </span>eq: F) -> bool |
| <a href=#288 id=288 data-nosnippet>288</a><span class="kw">where |
| <a href=#289 id=289 data-nosnippet>289</a> </span>I: IntoIterator, |
| <a href=#290 id=290 data-nosnippet>290</a> I2: IntoIterator, |
| <a href=#291 id=291 data-nosnippet>291</a> F: FnMut(I2::Item, I::Item) -> bool, |
| <a href=#292 id=292 data-nosnippet>292</a>{ |
| <a href=#293 id=293 data-nosnippet>293</a> <span class="kw">let </span><span class="kw-2">mut </span>other = other.into_iter(); |
| <a href=#294 id=294 data-nosnippet>294</a> <span class="kw">let </span><span class="kw-2">mut </span>this = this.into_iter(); |
| <a href=#295 id=295 data-nosnippet>295</a> |
| <a href=#296 id=296 data-nosnippet>296</a> <span class="kw">loop </span>{ |
| <a href=#297 id=297 data-nosnippet>297</a> <span class="kw">let </span>x = <span class="kw">match </span>this.next() { |
| <a href=#298 id=298 data-nosnippet>298</a> <span class="prelude-val">None </span>=> <span class="kw">return </span>other.next().is_none(), |
| <a href=#299 id=299 data-nosnippet>299</a> <span class="prelude-val">Some</span>(val) => val, |
| <a href=#300 id=300 data-nosnippet>300</a> }; |
| <a href=#301 id=301 data-nosnippet>301</a> |
| <a href=#302 id=302 data-nosnippet>302</a> <span class="kw">let </span>y = <span class="kw">match </span>other.next() { |
| <a href=#303 id=303 data-nosnippet>303</a> <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="bool-val">false</span>, |
| <a href=#304 id=304 data-nosnippet>304</a> <span class="prelude-val">Some</span>(val) => val, |
| <a href=#305 id=305 data-nosnippet>305</a> }; |
| <a href=#306 id=306 data-nosnippet>306</a> |
| <a href=#307 id=307 data-nosnippet>307</a> <span class="kw">if </span>!eq(x, y) { |
| <a href=#308 id=308 data-nosnippet>308</a> <span class="kw">return </span><span class="bool-val">false</span>; |
| <a href=#309 id=309 data-nosnippet>309</a> } |
| <a href=#310 id=310 data-nosnippet>310</a> } |
| <a href=#311 id=311 data-nosnippet>311</a>} |
| <a href=#312 id=312 data-nosnippet>312</a> |
| <a href=#313 id=313 data-nosnippet>313</a><span class="doccomment">/// Returns all final segments of the argument, longest first. |
| <a href=#314 id=314 data-nosnippet>314</a></span><span class="kw">pub fn </span>slice_tails<T>(this: <span class="kw-2">&</span>[T]) -> <span class="kw">impl </span>Iterator<Item = <span class="kw-2">&</span>[T]> { |
| <a href=#315 id=315 data-nosnippet>315</a> (<span class="number">0</span>..this.len()).map(|i| <span class="kw-2">&</span>this[i..]) |
| <a href=#316 id=316 data-nosnippet>316</a>} |
| <a href=#317 id=317 data-nosnippet>317</a> |
| <a href=#318 id=318 data-nosnippet>318</a><span class="attr">#[cfg(test)] |
| <a href=#319 id=319 data-nosnippet>319</a></span><span class="kw">mod </span>tests { |
| <a href=#320 id=320 data-nosnippet>320</a> <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <a href=#321 id=321 data-nosnippet>321</a> |
| <a href=#322 id=322 data-nosnippet>322</a> <span class="attr">#[test] |
| <a href=#323 id=323 data-nosnippet>323</a> </span><span class="kw">fn </span>test_trim_indent() { |
| <a href=#324 id=324 data-nosnippet>324</a> <span class="macro">assert_eq!</span>(trim_indent(<span class="string">""</span>), <span class="string">""</span>); |
| <a href=#325 id=325 data-nosnippet>325</a> <span class="macro">assert_eq!</span>( |
| <a href=#326 id=326 data-nosnippet>326</a> trim_indent( |
| <a href=#327 id=327 data-nosnippet>327</a> <span class="string">" |
| <a href=#328 id=328 data-nosnippet>328</a> hello |
| <a href=#329 id=329 data-nosnippet>329</a> world |
| <a href=#330 id=330 data-nosnippet>330</a>" |
| <a href=#331 id=331 data-nosnippet>331</a> </span>), |
| <a href=#332 id=332 data-nosnippet>332</a> <span class="string">"hello\nworld\n" |
| <a href=#333 id=333 data-nosnippet>333</a> </span>); |
| <a href=#334 id=334 data-nosnippet>334</a> <span class="macro">assert_eq!</span>( |
| <a href=#335 id=335 data-nosnippet>335</a> trim_indent( |
| <a href=#336 id=336 data-nosnippet>336</a> <span class="string">" |
| <a href=#337 id=337 data-nosnippet>337</a> hello |
| <a href=#338 id=338 data-nosnippet>338</a> world" |
| <a href=#339 id=339 data-nosnippet>339</a> </span>), |
| <a href=#340 id=340 data-nosnippet>340</a> <span class="string">"hello\nworld" |
| <a href=#341 id=341 data-nosnippet>341</a> </span>); |
| <a href=#342 id=342 data-nosnippet>342</a> <span class="macro">assert_eq!</span>(trim_indent(<span class="string">" hello\n world\n"</span>), <span class="string">"hello\nworld\n"</span>); |
| <a href=#343 id=343 data-nosnippet>343</a> <span class="macro">assert_eq!</span>( |
| <a href=#344 id=344 data-nosnippet>344</a> trim_indent( |
| <a href=#345 id=345 data-nosnippet>345</a> <span class="string">" |
| <a href=#346 id=346 data-nosnippet>346</a> fn main() { |
| <a href=#347 id=347 data-nosnippet>347</a> return 92; |
| <a href=#348 id=348 data-nosnippet>348</a> } |
| <a href=#349 id=349 data-nosnippet>349</a> " |
| <a href=#350 id=350 data-nosnippet>350</a> </span>), |
| <a href=#351 id=351 data-nosnippet>351</a> <span class="string">"fn main() {\n return 92;\n}\n" |
| <a href=#352 id=352 data-nosnippet>352</a> </span>); |
| <a href=#353 id=353 data-nosnippet>353</a> } |
| <a href=#354 id=354 data-nosnippet>354</a> |
| <a href=#355 id=355 data-nosnippet>355</a> <span class="attr">#[test] |
| <a href=#356 id=356 data-nosnippet>356</a> </span><span class="kw">fn </span>test_replace() { |
| <a href=#357 id=357 data-nosnippet>357</a> <span class="attr">#[track_caller] |
| <a href=#358 id=358 data-nosnippet>358</a> </span><span class="kw">fn </span>test_replace(src: <span class="kw-2">&</span>str, from: char, to: <span class="kw-2">&</span>str, expected: <span class="kw-2">&</span>str) { |
| <a href=#359 id=359 data-nosnippet>359</a> <span class="kw">let </span><span class="kw-2">mut </span>s = src.to_owned(); |
| <a href=#360 id=360 data-nosnippet>360</a> replace(<span class="kw-2">&mut </span>s, from, to); |
| <a href=#361 id=361 data-nosnippet>361</a> <span class="macro">assert_eq!</span>(s, expected, <span class="string">"from: {from:?}, to: {to:?}"</span>); |
| <a href=#362 id=362 data-nosnippet>362</a> } |
| <a href=#363 id=363 data-nosnippet>363</a> |
| <a href=#364 id=364 data-nosnippet>364</a> test_replace(<span class="string">""</span>, <span class="string">'a'</span>, <span class="string">"b"</span>, <span class="string">""</span>); |
| <a href=#365 id=365 data-nosnippet>365</a> test_replace(<span class="string">""</span>, <span class="string">'a'</span>, <span class="string">"😀"</span>, <span class="string">""</span>); |
| <a href=#366 id=366 data-nosnippet>366</a> test_replace(<span class="string">""</span>, <span class="string">'😀'</span>, <span class="string">"a"</span>, <span class="string">""</span>); |
| <a href=#367 id=367 data-nosnippet>367</a> test_replace(<span class="string">"a"</span>, <span class="string">'a'</span>, <span class="string">"b"</span>, <span class="string">"b"</span>); |
| <a href=#368 id=368 data-nosnippet>368</a> test_replace(<span class="string">"aa"</span>, <span class="string">'a'</span>, <span class="string">"b"</span>, <span class="string">"bb"</span>); |
| <a href=#369 id=369 data-nosnippet>369</a> test_replace(<span class="string">"ada"</span>, <span class="string">'a'</span>, <span class="string">"b"</span>, <span class="string">"bdb"</span>); |
| <a href=#370 id=370 data-nosnippet>370</a> test_replace(<span class="string">"a"</span>, <span class="string">'a'</span>, <span class="string">"😀"</span>, <span class="string">"😀"</span>); |
| <a href=#371 id=371 data-nosnippet>371</a> test_replace(<span class="string">"😀"</span>, <span class="string">'😀'</span>, <span class="string">"a"</span>, <span class="string">"a"</span>); |
| <a href=#372 id=372 data-nosnippet>372</a> test_replace(<span class="string">"😀x"</span>, <span class="string">'😀'</span>, <span class="string">"a"</span>, <span class="string">"ax"</span>); |
| <a href=#373 id=373 data-nosnippet>373</a> test_replace(<span class="string">"y😀x"</span>, <span class="string">'😀'</span>, <span class="string">"a"</span>, <span class="string">"yax"</span>); |
| <a href=#374 id=374 data-nosnippet>374</a> test_replace(<span class="string">"a,b,c"</span>, <span class="string">','</span>, <span class="string">"."</span>, <span class="string">"a.b.c"</span>); |
| <a href=#375 id=375 data-nosnippet>375</a> test_replace(<span class="string">"a,b,c"</span>, <span class="string">','</span>, <span class="string">".."</span>, <span class="string">"a..b..c"</span>); |
| <a href=#376 id=376 data-nosnippet>376</a> test_replace(<span class="string">"a.b.c"</span>, <span class="string">'.'</span>, <span class="string">".."</span>, <span class="string">"a..b..c"</span>); |
| <a href=#377 id=377 data-nosnippet>377</a> test_replace(<span class="string">"a.b.c"</span>, <span class="string">'.'</span>, <span class="string">".."</span>, <span class="string">"a..b..c"</span>); |
| <a href=#378 id=378 data-nosnippet>378</a> test_replace(<span class="string">"a😀b😀c"</span>, <span class="string">'😀'</span>, <span class="string">"."</span>, <span class="string">"a.b.c"</span>); |
| <a href=#379 id=379 data-nosnippet>379</a> test_replace(<span class="string">"a.b.c"</span>, <span class="string">'.'</span>, <span class="string">"😀"</span>, <span class="string">"a😀b😀c"</span>); |
| <a href=#380 id=380 data-nosnippet>380</a> test_replace(<span class="string">"a.b.c"</span>, <span class="string">'.'</span>, <span class="string">"😀😀"</span>, <span class="string">"a😀😀b😀😀c"</span>); |
| <a href=#381 id=381 data-nosnippet>381</a> test_replace(<span class="string">".a.b.c."</span>, <span class="string">'.'</span>, <span class="string">"()"</span>, <span class="string">"()a()b()c()"</span>); |
| <a href=#382 id=382 data-nosnippet>382</a> test_replace(<span class="string">".a.b.c."</span>, <span class="string">'.'</span>, <span class="string">""</span>, <span class="string">"abc"</span>); |
| <a href=#383 id=383 data-nosnippet>383</a> } |
| <a href=#384 id=384 data-nosnippet>384</a>}</code></pre></div></section></main></body></html> |
