{"id":45620,"date":"2023-06-08T04:29:43","date_gmt":"2023-09-01T16:59:44","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45620-2\/"},"modified":"2024-04-30T07:49:59","modified_gmt":"2024-04-29T23:49:59","slug":"45620-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45620-2\/","title":{"rendered":""},"content":{"rendered":"

C++er\u304cRust\u3092\u52c9\u5f37\u3057\u59cb\u3081\u308b\u3068\u3001\u300c\u3042\u308c\u3001\u601d\u3063\u3066\u305f\u52d5\u304d\u3068\u9055\u3046\u300d\u3068\u601d\u3046\u4e8b\u304c\u3042\u308a\u307e\u3059\u3002
\n\u305d\u3093\u306a\u6642\u306f\u3001\u3053\u306e\u6295\u7a3f\u3092\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

\u57fa\u672cmove\u3067\u3059<\/h3>\n

\u3042\u308b\u5909\u6570\u3092\u95a2\u6570\u306b\u6e21\u3057\u305f\u5834\u5408\u3001\u57fa\u672cmove\u306b\u306a\u308a\u307e\u3059\uff08i32,f32\u7b49\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306f\u30b3\u30d4\u30fc\u306b\u306a\u308b\uff09<\/p>\n

move\u3068\u3044\u3046\u306e\u306f\u3001\u5185\u90e8\u7684\u306b\u306fmemcpy\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u4e8b\u3067\u3001move\u5143\u306e\u65b9\u306f\u3001\u3082\u3046\u4f7f\u3048\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n

fn<\/span> test<\/span>(<\/span>v<\/span>:<\/span> Vec<\/span><<\/span>i32<\/span>><\/span>)<\/span> {<\/span>\r\n    println!<\/span>(<\/span>\"{:?}\"<\/span>,<\/span> v<\/span>);<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> mut<\/span> v<\/span> =<\/span> vec!<\/span>[<\/span>1<\/span>,<\/span>2<\/span>,<\/span>3<\/span>];<\/span>  \/\/ vector\u3092\u4f5c\u6210<\/span>\r\n    v<\/span>.push<\/span>(<\/span>4<\/span>);<\/span>  \/\/ OK<\/span>\r\n    test<\/span>(<\/span>v<\/span>);<\/span>    \/\/ \u3053\u3053\u3067move\u3055\u308c\u308b\uff01<\/span>\r\n\/\/    v.push(5);  \/\/ \u3082\u3046move\u3055\u308c\u3061\u3083\u3063\u3066\u308b\u306e\u3067\u30a8\u30e9\u30fc<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
C++\u3067vector\u3092memcpy\u306a\u3093\u3066\u3057\u305f\u3089\u5927\u5909\u306a\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u304c\u3001Rust\u3067\u306f\u3061\u3083\u3093\u3068move\u5143\u306e\u65b9\u3092\u4f7f\u3048\u306a\u304f\u3057\u3066\u304f\u308c\u308b\u306e\u3067\u3001\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
\n
&\uff08\u53c2\u7167\uff09\u306e\u4f7f\u3044\u65b9\u304c\u3061\u3087\u3063\u3068\u9055\u3046<\/h3>\n
Rust\u3067\u306f\u3001\u53c2\u7167\u3092\u6e21\u3059\u3068\u304d\u3082&\u3064\u3051\u308b<\/p>\n
fn<\/span> test<\/span>(<\/span>v<\/span>:<\/span> &<\/span>Vec<\/span><<\/span>i32<\/span>><\/span>)<\/span> {<\/span>  \/\/\u53c2\u7167\u3067\u53d7\u3051\u53d6\u308b\u3088\u3046\u306b\u3057\u305f<\/span>\r\n    println!<\/span>(<\/span>\"{:?}\"<\/span>,<\/span> v<\/span>);<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> mut<\/span> v<\/span> =<\/span> vec!<\/span>[<\/span>1<\/span>,<\/span>2<\/span>,<\/span>3<\/span>];<\/span>  \/\/ vector\u3092\u4f5c\u6210<\/span>\r\n    v<\/span>.push<\/span>(<\/span>4<\/span>);<\/span>  \/\/ OK<\/span>\r\n    test<\/span>(<\/span>&<\/span>v<\/span>);<\/span>    \/\/ \u3053\u3053\u3067\u3082&\u3092\u3064\u3051\u308b\uff01<\/span>\r\n    v<\/span>.push<\/span>(<\/span>5<\/span>);<\/span>  \/\/ move\u3055\u308c\u3066\u306a\u3044\u306e\u3067OK<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\n
mut\u306fconst\u306e\u53cd\u5bfe\u3067\u306f\u306a\u3044<\/h3>\n
\u30df\u30e5\u30fc\u30bf\u30d3\u30ea\u30c6\u30a3\u306f\u3001C++\u306b\u306f\u7121\u3044\u6982\u5ff5\u3067\u3059\u3002
\n\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u8aad\u3093\u3067\u308b\u3068\u3001\u3042\u3001const\u304c\u53cd\u5bfe\u306b\u306a\u3063\u305f\u3093\u3060\u306a\u3068\u601d\u3063\u3066\u3057\u307e\u3044\u304c\u3061\u3067\u3059\u304c\u3001\u9055\u3044\u307e\u3059\u3002<\/p>\n
    \n
  • \n
      C++\u306econst\u306f\u3001\u305d\u306e\u5909\u6570\u304c\u4e0d\u5909\u3067\u3042\u308b\u4e8b\u3092\u5f37\u5236\u3059\u308b\u3082\u306e<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        Rust\u306emut\u306f\u3001\u3053\u308c\u304b\u3089\u3053\u306e\u5909\u6570\u3092\u66f8\u304d\u63db\u3048\u307e\u3059\u3088\u3001\u3068\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u4f1d\u3048\u308b\u3053\u3068<\/ul>\n
        \u3060\u3044\u305f\u3044\u3053\u3093\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002
        \n\u203b\u3044\u308d\u3044\u308d\u8a66\u3057\u3066\u3044\u308b\u3046\u3061\u306b\u3001\u308f\u304b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u305d\u3093\u306a\u306b\u5fc3\u914d\u3057\u306a\u304f\u3066\u3082\u5927\u4e08\u592b\u3067\u3059\u3002<\/p>\n
        [\u53c2\u8003]
        \nhttps:\/\/rust-lang-ja.github.io\/the-rust-programming-language-ja\/1.6\/book\/mutability.html<\/p>\n","protected":false},"excerpt":{"rendered":"
        C++er\u304cRust\u3092\u52c9\u5f37\u3057\u59cb\u3081\u308b\u3068\u3001\u300c\u3042\u308c\u3001\u601d\u3063\u3066\u305f\u52d5\u304d\u3068\u9055\u3046\u300d\u3068\u601d\u3046\u4e8b\u304c\u3042\u308a\u307e\u3059\u3002 \u305d\u3093\u306a\u6642\u306f\u3001\u3053\u306e\u6295\u7a3f\u3092 […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45620","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- 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\/45620-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"C++er\u304cRust\u3092\u52c9\u5f37\u3057\u59cb\u3081\u308b\u3068\u3001\u300c\u3042\u308c\u3001\u601d\u3063\u3066\u305f\u52d5\u304d\u3068\u9055\u3046\u300d\u3068\u601d\u3046\u4e8b\u304c\u3042\u308a\u307e\u3059\u3002 \u305d\u3093\u306a\u6642\u306f\u3001\u3053\u306e\u6295\u7a3f\u3092 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45620-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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