{"id":45557,"date":"2023-09-14T23:32:31","date_gmt":"2024-03-05T21:47:45","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45557-2\/"},"modified":"2024-05-03T23:46:14","modified_gmt":"2024-05-03T15:46:14","slug":"45557-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45557-2\/","title":{"rendered":""},"content":{"rendered":"

\u3053\u306e\u8a18\u4e8b\u306f Rust1.5\u3067\u306e\u52d5\u4f5c\u78ba\u8a8d\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\n

Rust\u3067String\u3092 &str \u306b\u5909\u63db\u3059\u308b\u969b\u306b\u3001<\/p>\n

String fn as_str \u3092\u3088\u304f\u4f7f\u3044\u307e\u3059\u304c\u3001RFC\u306e\u6539\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001unstable \u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

Rust1.0\u306e\u9803\u306f as_slice \u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u3069\u3057\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3001\u6700\u8fd1\u306eRust\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3082 as_str \u306f\u4f7f\u7528\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n

\u7d50\u69cb\u4fbf\u5229\u306a\u30e1\u30bd\u30c3\u30c9\u3060\u3063\u305f\u306e\u3067\u3059\u304c\u3001stable\u7248Rust\u3067\u306f\u4f7f\u7528\u3067\u304d\u306a\u3044\u306e\u3067\u3001&str\u304c\u5fc5\u9808\u306acrate\u3092\u6271\u3046\u5834\u5408\u306f\u3001\u8f9b\u3044\u5834\u9762\u304c\u591a\u3005\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8abf\u3079\u3066\u307f\u308b\u3068\u3001stackoverflow:How to convert String into &’static str \u306b\u7b54\u3048\u304c\u66f8\u3044\u3066\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n

let<\/span> s<\/span>:<\/span> String<\/span> =<\/span> \"abcdefg\"<\/span>.to_owned<\/span>();<\/span>\r\nlet<\/span> s_slice<\/span>:<\/span> &<\/span>str<\/span> =<\/span> &<\/span>s<\/span>[<\/span>..<\/span>];<\/span>  \/\/ take a full slice of the string<\/span>\r\n<\/code><\/pre>\n
let<\/span> s_slice<\/span>:<\/span> &<\/span>str<\/span> =<\/span> &*<\/span>s<\/span>;<\/span>  \/\/ s  : String <\/span>\r\n                          \/\/ *s : str (via Deref<Target=str>)<\/span>\r\n                          \/\/ &*s: &str<\/span>\r\n<\/code><\/pre>\n
\u51fa\u5178: stackoverflow:How to convert String into &’static str<\/p>\n
as_str\u304cstable\u306b\u306a\u308b\u307e\u3067\u3001\u3053\u3061\u3089\u3092\u4f7f\u3046\u3068\u826f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3053\u306e\u8a18\u4e8b\u306f Rust1.5\u3067\u306e\u52d5\u4f5c\u78ba\u8a8d\u3092\u3057\u3066\u3044\u307e\u3059\u3002 Rust\u3067String\u3092 &str \u306b\u5909\u63db\u3059\u308b\u969b […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45557","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\/45557-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u3053\u306e\u8a18\u4e8b\u306f Rust1.5\u3067\u306e\u52d5\u4f5c\u78ba\u8a8d\u3092\u3057\u3066\u3044\u307e\u3059\u3002 Rust\u3067String\u3092 &str \u306b\u5909\u63db\u3059\u308b\u969b […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45557-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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