{"id":45609,"date":"2023-05-16T20:18:36","date_gmt":"2023-04-07T13:25:54","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45609-2\/"},"modified":"2024-04-30T04:30:32","modified_gmt":"2024-04-29T20:30:32","slug":"45609-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45609-2\/","title":{"rendered":""},"content":{"rendered":"<h1>Rust\u3068Ruby\u306e\u9055\u3044<\/h1>\n<hr \/>\n<h1>Mut<\/h1>\n<hr \/>\n<ul class=\"post-ul\">Ruby: \u5909\u6570\u306f\u5024\u5909\u3048\u3089\u308c\u307e\u3059<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span>\r\n<span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span>\r\n<span class=\"nb\">p<\/span> <span class=\"n\">hoge<\/span>\r\n\r\n<span class=\"c1\"># \u7d50\u679c: =&gt; 2<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: \u5909\u6570\u306f\u5024\u5909\u66f4\u4e0d\u53ef(immutable)<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">let<\/span> <span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"o\">&lt;!--<\/span> \r\n    <span class=\"err\">\u30d3\u30eb\u30c9\u30a8\u30e9\u30fc<\/span> \r\n    <span class=\"n\">error<\/span><span class=\"p\">[<\/span><span class=\"n\">E0384<\/span><span class=\"p\">]:<\/span> <span class=\"n\">cannot<\/span> <span class=\"n\">assign<\/span> <span class=\"n\">twice<\/span> <span class=\"n\">to<\/span> <span class=\"n\">immutable<\/span> <span class=\"n\">variable<\/span> <span class=\"err\">`<\/span><span class=\"n\">hoge<\/span><span class=\"err\">`<\/span> \r\n  <span class=\"o\">-<\/span><span class=\"k\">-&gt;<\/span>\r\n\r\n\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hoge {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: \u5909\u6570\u306e\u5024\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u3001mut\u3092\u4ed8\u3051\u306a\u3044\u3068\u3044\u3051\u307e\u305b\u3093<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hoge {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"o\">&lt;!--<\/span> <span class=\"err\">\u7d50\u679c<\/span><span class=\"p\">:<\/span> <span class=\"n\">Hoge<\/span> <span class=\"mi\">2<\/span> <span class=\"o\">-<\/span><span class=\"k\">-&gt;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<h1>\u578b<\/h1>\n<hr \/>\n<ul class=\"post-ul\">Ruby: \u5909\u6570\u306e\u578b\u304c\u3042\u308a\u307e\u305b\u3093\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306f\u5024\u304b\u3089\u578b\u3092\u4ed8\u3051\u307e\u3059 (PHP\u306a\u3069\u3068\u540c\u3058)<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"as\"<\/span>\r\n<span class=\"n\">a<\/span><span class=\"p\">.<\/span><span class=\"nf\">class<\/span>\r\n<span class=\"c1\"># =&gt; String<\/span>\r\n\r\n<span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">12<\/span>\r\n<span class=\"n\">hoge<\/span><span class=\"p\">.<\/span><span class=\"nf\">class<\/span>\r\n<span class=\"c1\"># =&gt; Integer<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: \u5909\u6570\u306e\u578b\u306f\u5909\u66f4\u51fa\u6765\u307e\u305b\u3093\u3001(C, Java, Cotlin, Swift\u306a\u3069\u3068\u540c\u3058)<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span> \r\n  <span class=\"o\">&lt;!--<\/span> <span class=\"n\">Hoge<\/span><span class=\"err\">\u5909\u6570\u306f<\/span> <span class=\"err\">`<\/span><span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"err\">`<\/span> <span class=\"err\">\u578b\u306b\u306a\u308a\u307e\u3059<\/span><span class=\"o\">-<\/span><span class=\"k\">-&gt;<\/span>\r\n\r\n  <span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"hola\"<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"c\">\/\/ \u30d3\u30eb\u30c9\u30a8\u30e9\u30fc <\/span>\r\n  <span class=\"c\">\/\/ error[E0308]: mismatched types<\/span>\r\n  <span class=\"c\">\/\/  |<\/span>\r\n  <span class=\"c\">\/\/  |     hoge = \"hola\";<\/span>\r\n  <span class=\"c\">\/\/  |            ^^^^^^ expected integer, found `&amp;str`<\/span>\r\n\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hoge {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<h1>\u5909\u6570\u306eReference<\/h1>\n<hr \/>\n<ul class=\"post-ul\">Rust\u306freference\u304c\u3042\u308a\u307e\u3059\u3002(C\u3068\u540c\u3058)<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n\r\n  <span class=\"k\">let<\/span> <span class=\"n\">a<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"k\">let<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">a<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Pointer a: {:p}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">b<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Value   a: {}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">a<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Value   b: {}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">b<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n  <span class=\"c\">\/\/ Pointer a: 0x7ffd469b821f<\/span>\r\n  <span class=\"c\">\/\/ Value   a: 10<\/span>\r\n  <span class=\"c\">\/\/ Value   b: 10<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Ruby: \u5168\u90e8\u306fobject\u306a\u306e\u3067\u3001\u5909\u6570\u306fPointer\u3067\u3059\u3002Rust\u306e\u66f8\u304d\u65b9\u304c\u5b58\u5728\u3057\u307e\u305b\u3093<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">12<\/span>\r\n<span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">a<\/span>\r\n\r\n<span class=\"c1\"># \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u30a8\u30e9\u30fc<\/span>\r\n<span class=\"c1\"># SyntaxError ((irb):23: syntax error, unexpected &amp;)<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Ruby\u306eReference<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">Hoge<\/span> <span class=\"nb\">attr_accessor<\/span> <span class=\"ss\">:name<\/span> <span class=\"k\">end<\/span>\r\n<span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"no\">Hoge<\/span><span class=\"p\">.<\/span><span class=\"nf\">new<\/span>\r\n<span class=\"n\">fuga<\/span> <span class=\"o\">=<\/span> <span class=\"n\">hoge<\/span>\r\n\r\n<span class=\"n\">hoge<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"hoge\"<\/span>\r\n<span class=\"nb\">p<\/span> <span class=\"n\">fuga<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n<span class=\"c1\"># \u7d50\u679c<\/span>\r\n<span class=\"c1\"># =&gt; \"hoge\"<\/span>\r\n\r\n<span class=\"n\">fuga<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"fuga\"<\/span>\r\n<span class=\"nb\">p<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n<span class=\"c1\"># \u7d50\u679c<\/span>\r\n<span class=\"c1\"># =&gt; \"fuga\"<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<h2>\u8cea\u554f1<\/h2>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n\r\n  <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">a<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"k\">let<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">a<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">11<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Value a: {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">a<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u2192\u3000\u30a8\u30e9\u30fc\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/p>\n<hr \/>\n<h2>\u8cea\u554f1\u306e\u7b54\u3048<\/h2>\n<ul class=\"post-ul\">\u30a8\u30e9\u30fc\u306f\u3042\u308a\u307e\u305b\u3093<\/ul>\n<hr \/>\n<h2>\u8cea\u554f2<\/h2>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n\r\n  <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">a<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"k\">let<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">a<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">11<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Value b: {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">b<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u2192\u3000\u7d50\u679c\u306f\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/p>\n<hr \/>\n<h2>\u8cea\u554f2\u306e\u7b54\u3048<\/h2>\n<ul class=\"post-ul\">\u30a8\u30e9\u30fc\u767a\u751f\u3057\u307e\u3059<\/ul>\n<pre class=\"post-pre\"><code> <span class=\"o\">-<\/span><span class=\"k\">-&gt;<\/span> <span class=\"n\">src<\/span><span class=\"o\">\/<\/span><span class=\"n\">main<\/span><span class=\"py\">.rs<\/span><span class=\"p\">:<\/span><span class=\"mi\">7<\/span><span class=\"p\">:<\/span><span class=\"mi\">3<\/span>\r\n  <span class=\"p\">|<\/span>\r\n<span class=\"mi\">7<\/span> <span class=\"p\">|<\/span>   <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">11<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">|<\/span>   <span class=\"o\">^<\/span>\r\n  <span class=\"p\">|<\/span>\r\n  <span class=\"o\">=<\/span> <span class=\"n\">note<\/span><span class=\"p\">:<\/span> <span class=\"err\">`<\/span><span class=\"nd\">#[warn(unused_assignments)]<\/span><span class=\"err\">`<\/span> <span class=\"n\">on<\/span> <span class=\"n\">by<\/span> <span class=\"n\">default<\/span>\r\n  <span class=\"o\">=<\/span> <span class=\"n\">help<\/span><span class=\"p\">:<\/span> <span class=\"n\">maybe<\/span> <span class=\"n\">it<\/span> <span class=\"n\">is<\/span> <span class=\"n\">overwritten<\/span> <span class=\"n\">before<\/span> <span class=\"n\">being<\/span> <span class=\"n\">read<\/span><span class=\"o\">?<\/span>\r\n\r\n<span class=\"n\">error<\/span><span class=\"p\">[<\/span><span class=\"n\">E0506<\/span><span class=\"p\">]:<\/span> <span class=\"n\">cannot<\/span> <span class=\"n\">assign<\/span> <span class=\"n\">to<\/span> <span class=\"err\">`<\/span><span class=\"n\">a<\/span><span class=\"err\">`<\/span> <span class=\"n\">because<\/span> <span class=\"n\">it<\/span> <span class=\"n\">is<\/span> <span class=\"n\">borrowed<\/span>\r\n <span class=\"o\">-<\/span><span class=\"k\">-&gt;<\/span> <span class=\"n\">src<\/span><span class=\"o\">\/<\/span><span class=\"n\">main<\/span><span class=\"py\">.rs<\/span><span class=\"p\">:<\/span><span class=\"mi\">7<\/span><span class=\"p\">:<\/span><span class=\"mi\">3<\/span>\r\n  <span class=\"p\">|<\/span>\r\n<span class=\"mi\">5<\/span> <span class=\"p\">|<\/span>   <span class=\"k\">let<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">a<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">|<\/span>           <span class=\"o\">------<\/span> <span class=\"n\">borrow<\/span> <span class=\"n\">of<\/span> <span class=\"err\">`<\/span><span class=\"n\">a<\/span><span class=\"err\">`<\/span> <span class=\"n\">occurs<\/span> <span class=\"n\">here<\/span>\r\n<span class=\"mi\">6<\/span> <span class=\"p\">|<\/span>   \r\n<span class=\"mi\">7<\/span> <span class=\"p\">|<\/span>   <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">11<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">|<\/span>   <span class=\"o\">^^^^^^<\/span> <span class=\"n\">assignment<\/span> <span class=\"n\">to<\/span> <span class=\"n\">borrowed<\/span> <span class=\"err\">`<\/span><span class=\"n\">a<\/span><span class=\"err\">`<\/span> <span class=\"n\">occurs<\/span> <span class=\"n\">here<\/span>\r\n<span class=\"mi\">8<\/span> <span class=\"p\">|<\/span>   <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Value b: {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">b<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">|<\/span>                            <span class=\"o\">-<\/span> <span class=\"n\">borrow<\/span> <span class=\"n\">later<\/span> <span class=\"n\">used<\/span> <span class=\"n\">here<\/span>\r\n\r\n<span class=\"n\">error<\/span><span class=\"p\">:<\/span> <span class=\"n\">aborting<\/span> <span class=\"n\">due<\/span> <span class=\"n\">to<\/span> <span class=\"n\">previous<\/span> <span class=\"n\">error<\/span><span class=\"p\">;<\/span> <span class=\"mi\">1<\/span> <span class=\"n\">warning<\/span> <span class=\"n\">emitted<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<h1>Borrowing \u3068 Ownership<\/h1>\n<hr \/>\n<ul class=\"post-ul\">Ruby\u3067\u30aa\u30fc\u30ca\u30fc\u3068\u3046\u3044\u3046\u6982\u5ff5\u304c\u306a\u3044\u3001\u8907\u6570\u5909\u6570\u306f\u3072\u3068\u3064\u306e\u30c7\u30fc\u30bf\u306b\u53c2\u7167\u3059\u308b\u3068\u304d\u306b\u3001\u3069\u306e\u5909\u6570\u3067\u3082\u30c7\u30fc\u30bf\u5909\u66f4\u3067\u304d\u307e\u3059<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">Hoge<\/span> <span class=\"nb\">attr_accessor<\/span> <span class=\"ss\">:name<\/span> <span class=\"k\">end<\/span>\r\n<span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"no\">Hoge<\/span><span class=\"p\">.<\/span><span class=\"nf\">new<\/span>\r\n<span class=\"n\">fuga<\/span> <span class=\"o\">=<\/span> <span class=\"n\">hoge<\/span>\r\n\r\n<span class=\"n\">hoge<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"hoge\"<\/span>\r\n<span class=\"nb\">p<\/span> <span class=\"n\">fuga<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n<span class=\"c1\"># \u7d50\u679c<\/span>\r\n<span class=\"c1\"># =&gt; \"hoge\"<\/span>\r\n\r\n<span class=\"n\">fuga<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"fuga\"<\/span>\r\n<span class=\"nb\">p<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n<span class=\"c1\"># \u7d50\u679c<\/span>\r\n<span class=\"c1\"># =&gt; \"fuga\"<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: \u4e00\u3064\u306e\u5909\u6570\u3060\u3051\u30c7\u30fc\u30bf\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">struct<\/span> <span class=\"n\">Hoge<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">count<\/span><span class=\"p\">:<\/span> <span class=\"nb\">i32<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">hoge<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Hoge<\/span> <span class=\"p\">{<\/span><span class=\"n\">count<\/span><span class=\"p\">:<\/span> <span class=\"mi\">1<\/span><span class=\"p\">};<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">fuga<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"n\">fuga<\/span><span class=\"py\">.count<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hoge count: {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">hoge<\/span><span class=\"py\">.count<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"n\">hoge<\/span><span class=\"py\">.count<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hoge count: {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">fuga<\/span><span class=\"py\">.count<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"c\">\/\/     error[E0502]: cannot borrow `hoge.count` as immutable because it is also borrowed as mutable<\/span>\r\n    <span class=\"c\">\/\/   --&gt; src\/main.rs:8:33<\/span>\r\n    <span class=\"c\">\/\/    |<\/span>\r\n    <span class=\"c\">\/\/ 6  |     let fuga = &amp;mut hoge;<\/span>\r\n    <span class=\"c\">\/\/    |                --------- mutable borrow occurs here<\/span>\r\n    <span class=\"c\">\/\/ 7  |     fuga.count = 2;<\/span>\r\n    <span class=\"c\">\/\/ 8  |     println!(\"Hoge count: {:}\", hoge.count);<\/span>\r\n    <span class=\"c\">\/\/    |                                 ^^^^^^^^^^ immutable borrow occurs here<\/span>\r\n    <span class=\"c\">\/\/ 9  |     hoge.count = 3;<\/span>\r\n    <span class=\"c\">\/\/ 10 |     println!(\"Hoge count: {:}\", fuga.count);<\/span>\r\n    <span class=\"c\">\/\/    |                                 ---------- mutable borrow later used here<\/span>\r\n\r\n    <span class=\"c\">\/\/ error[E0506]: cannot assign to `hoge.count` because it is borrowed<\/span>\r\n    <span class=\"c\">\/\/   --&gt; src\/main.rs:9:5<\/span>\r\n    <span class=\"c\">\/\/    |<\/span>\r\n    <span class=\"c\">\/\/ 6  |     let fuga = &amp;mut hoge;<\/span>\r\n    <span class=\"c\">\/\/    |                --------- borrow of `hoge.count` occurs here<\/span>\r\n    <span class=\"c\">\/\/ ...<\/span>\r\n    <span class=\"c\">\/\/ 9  |     hoge.count = 3;<\/span>\r\n    <span class=\"c\">\/\/    |     ^^^^^^^^^^^^^^ assignment to borrowed `hoge.count` occurs here<\/span>\r\n    <span class=\"c\">\/\/ 10 |     println!(\"Hoge count: {:}\", fuga.count);<\/span>\r\n    <span class=\"c\">\/\/    |                                 ---------- borrow later used here<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<h1>Nil vs Option<\/h1>\n<hr \/>\n<ul class=\"post-ul\">Ruby: \u3069\u306e\u5909\u6570\u3067\u3082nil\u4ed8\u3051\u3089\u308c\u307e\u3059<\/ul>\n<pre class=\"post-pre\"><code>  <span class=\"n\">x<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"n\">y<\/span> <span class=\"o\">=<\/span> <span class=\"kp\">nil<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"nb\">print<\/span> <span class=\"s2\">\"x: <\/span><span class=\"si\">#{<\/span><span class=\"n\">x<\/span><span class=\"si\">}<\/span><span class=\"s2\">, y: <\/span><span class=\"si\">#{<\/span><span class=\"n\">y<\/span><span class=\"si\">}<\/span><span class=\"s2\">\"<\/span>\r\n  <span class=\"c1\"># \u7d50\u679c<\/span>\r\n  <span class=\"c1\"># x: 2, y: =&gt; nil<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: nil\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3000\u2192\u3000\u4ee3\u308f\u308a\u306b\u30c7\u30fc\u30bf\u304c\u3042\u308b\u30fb\u306a\u3044\u306e\u578b\u304c\u3042\u308a\u307e\u3059\u3000\u2192\u3000Option<\/ul>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">x<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Option<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u32<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">Some<\/span><span class=\"p\">(<\/span><span class=\"mi\">2<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">y<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Option<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u32<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">None<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"x: {:?}, y: {:?}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">x<\/span><span class=\"p\">,<\/span> <span class=\"n\">y<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Rust Option\u306eNone = Ruby\u306enil<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">RUst Option\u306eSome = RUby\u306enil\u3058\u3083\u306a\u3044<\/ul>\n<hr \/>\n<ul class=\"post-ul\">Ruby: Nil\u306b\u95a2\u9023\u3059\u308boperator\u304c\u3042\u308a\u307e\u305b\u3093<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"kp\">nil<\/span>\r\n<span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"n\">a<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span>\r\n<span class=\"c1\"># NoMethodError (undefined method `+' for nil:NilClass)<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: Option\u306b\u95a2\u9023\u3059\u308boperator\u3082\u3042\u308a\u307e\u305b\u3093\u3001\u305f\u3060Option\u306e\u30c7\u30fc\u30bf\u3067\u4f7f\u3046\u3068\u3068\u304d\u306b\u3001None\u3092\u30c1\u30a7\u30c3\u30af\u3057\u306a\u3044\u3068\u3044\u3051\u307e\u305b\u3093\u3000\u2192\u3000\u5b89\u5168\u3067\u3059<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">let<\/span> <span class=\"n\">a<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Option<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u32<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">Some<\/span><span class=\"p\">(<\/span><span class=\"mi\">2<\/span><span class=\"p\">);<\/span>\r\n\r\n  <span class=\"k\">let<\/span> <span class=\"n\">value<\/span> <span class=\"o\">=<\/span> <span class=\"k\">match<\/span> <span class=\"n\">a<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nf\">Some<\/span><span class=\"p\">(<\/span><span class=\"n\">v<\/span><span class=\"p\">)<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"n\">v<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nb\">None<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"mi\">0<\/span> \r\n  <span class=\"p\">};<\/span>\r\n\r\n  <span class=\"k\">let<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"n\">value<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"b: {:}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">b<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<h1>Result &#8211; \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/h1>\n<hr \/>\n<ul class=\"post-ul\">\u30a8\u30e9\u30fc\u306f\u5916\u90e8API\u307e\u305f\u306f\u7279\u5225\u306a\u51e6\u7406\u306e\u6642\u306b\u3001\u30a8\u30e9\u30fc\u767a\u751f\u3057\u307e\u3059\u3002<\/ul>\n<p>\u4f8b\uff1a\u3000FbApiError, ValidationError..<\/p>\n<hr \/>\n<ul class=\"post-ul\">Ruby: \u95a2\u6570\u958b\u767a\u306e\u6642\u306b\u30a8\u30e9\u30fc\u6c17\u306b\u3057\u306a\u304f\u3082\u958b\u767a\u51fa\u6765\u307e\u3059<\/ul>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">def<\/span> <span class=\"nf\">call_api<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"nb\">method<\/span><span class=\"p\">)<\/span>\r\n   <span class=\"n\">fb_client<\/span><span class=\"p\">.<\/span><span class=\"nf\">call<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"nb\">method<\/span><span class=\"p\">)<\/span> <span class=\"c1\"># \u30a8\u30e9\u30fc\u304c\u3042\u308b\u51e6\u7406<\/span>\r\n\r\n   <span class=\"s1\">'API Done'<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Ruby: \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u6642\u306b\u958b\u767a\u8005\u306b\u6c7a\u3081\u3089\u308c\u307e\u3059\u3002<\/ul>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">def<\/span> <span class=\"nf\">call_api<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"nb\">method<\/span><span class=\"p\">)<\/span>\r\n  <span class=\"k\">begin<\/span>\r\n    <span class=\"n\">fb_client<\/span><span class=\"p\">.<\/span><span class=\"nf\">call<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"nb\">method<\/span><span class=\"p\">)<\/span>\r\n  <span class=\"k\">rescue<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"n\">exception<\/span>\r\n    <span class=\"s1\">'API ERROR'<\/span>\r\n  <span class=\"k\">end<\/span>\r\n\r\n  <span class=\"s1\">'API Done'<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Ruby: \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3057\u306a\u3044\u3068\u95a2\u6570\u304c\u547c\u3070\u308c\u308b\u3068\u3053\u308d\u306b\u30a8\u30e9\u30fc\u6295\u3052\u307e\u3059\u3002<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">def<\/span> <span class=\"nf\">call_api<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"nb\">method<\/span><span class=\"p\">)<\/span>\r\n   <span class=\"n\">fb_client<\/span><span class=\"p\">.<\/span><span class=\"nf\">call<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"nb\">method<\/span><span class=\"p\">)<\/span> <span class=\"c1\"># \u30a8\u30e9\u30fc\u304c\u3042\u308b\u51e6\u7406<\/span>\r\n\r\n   <span class=\"s1\">'API Done'<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<span class=\"n\">call_api<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"me\"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"GET\"<\/span><span class=\"p\">)<\/span> <span class=\"c1\"># fb_client.call \u3067\u30a8\u30e9\u30fc\u767a\u751f\u3057\u305f\u3089\u3001\u3053\u3053\u306b\u6b62\u307e\u308a\u307e\u3059\u3002<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: \u95a2\u6570\u958b\u767a\u306e\u6642\u306b\u30a8\u30e9\u30fc\u304c\u3042\u308c\u3070\u3001Result\u3068\u3046\u3044\u578b\u306b\u306a\u308a\u307e\u3059\u3002<\/ul>\n<pre class=\"post-pre\"><code>    <span class=\"k\">pub<\/span> <span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">call_api<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">endpoint<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">,<\/span> <span class=\"n\">method<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">String<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"k\">self<\/span><span class=\"nf\">.call<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"n\">method<\/span><span class=\"p\">)<\/span> <span class=\"c\">\/\/ \u30a8\u30e9\u30fc\u304c\u3042\u308b\u51e6\u7406<\/span>\r\n\r\n        <span class=\"s\">\"API DONE\"<\/span><span class=\"nf\">.to_owned<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: Result\u3092\u307f\u308b\u3068\u30a8\u30e9\u30fc\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u5206\u304b\u308a\u307e\u3059\u3002<\/ul>\n<pre class=\"post-pre\"><code>    <span class=\"k\">pub<\/span> <span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">call_api<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">endpoint<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">,<\/span> <span class=\"n\">method<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">String<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"k\">match<\/span> <span class=\"k\">self<\/span><span class=\"nf\">.call<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"n\">method<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n             <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"n\">value<\/span><span class=\"p\">)<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"s\">\"API DONE\"<\/span><span class=\"nf\">.to_owned<\/span><span class=\"p\">(),<\/span>\r\n             <span class=\"nf\">Err<\/span><span class=\"p\">(<\/span><span class=\"n\">error<\/span><span class=\"p\">)<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"s\">\"API ERROR\"<\/span><span class=\"nf\">.to_owned<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<hr \/>\n<ul class=\"post-ul\">Rust: \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3057\u306a\u3044\u3068\u304d\u306b\u3001\u30a8\u30e9\u30fc\u767a\u751f\u3057\u305f\u3089\u4f55\u3082\u8d77\u3053\u3089\u306a\u3044<\/ul>\n<pre class=\"post-pre\"><code>    <span class=\"k\">pub<\/span> <span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">call_api<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">endpoint<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">,<\/span> <span class=\"n\">method<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">String<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"k\">await<\/span> <span class=\"k\">self<\/span><span class=\"nf\">.call<\/span><span class=\"p\">(<\/span><span class=\"n\">endpoint<\/span><span class=\"p\">,<\/span> <span class=\"n\">method<\/span><span class=\"p\">)<\/span> <span class=\"c\">\/\/ \u30a8\u30e9\u30fc\u304c\u3042\u308b\u51e6\u7406<\/span>\r\n\r\n        <span class=\"s\">\"API DONE\"<\/span><span class=\"nf\">.to_owned<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">pub<\/span> <span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">run<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">self<\/span><span class=\"p\">){<\/span>\r\n        <span class=\"k\">await<\/span> <span class=\"k\">self<\/span><span class=\"nf\">.call_api<\/span><span class=\"p\">(<\/span><span class=\"s\">\"me\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"GET\"<\/span><span class=\"p\">)<\/span> <span class=\"c\">\/\/ .call \u3067\u30a8\u30e9\u30fc\u767a\u751f\u3057\u3066\u3082\u3001\u4f55\u3082\u8d77\u3053\u3089\u306a\u3044<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<h1>\u307e\u3068\u3081<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Mut<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u578b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Reference<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Nil\/Option<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Result<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Rust\u3068Ruby\u306e\u9055\u3044 Mut Ruby: \u5909\u6570\u306f\u5024\u5909\u3048\u3089\u308c\u307e\u3059 hoge = 1 hoge = 2 p h [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45609","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45609-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"Rust\u3068Ruby\u306e\u9055\u3044 Mut Ruby: \u5909\u6570\u306f\u5024\u5909\u3048\u3089\u308c\u307e\u3059 hoge = 1 hoge = 2 p h [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45609-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-04-07T13:25:54+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T20:30:32+00:00\" \/>\n<meta name=\"author\" content=\"\u96c5, \u609f\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u96c5, \u609f\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" 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