{"id":45231,"date":"2022-11-13T08:59:53","date_gmt":"2023-08-26T22:06:39","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45231-2\/"},"modified":"2024-04-29T00:26:26","modified_gmt":"2024-04-28T16:26:26","slug":"45231-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45231-2\/","title":{"rendered":""},"content":{"rendered":"

\u306f\u3058\u3081\u306b<\/h1>\n

Rust\u306e\u7279\u5fb4\u3068\u3057\u3066\u306f\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3084GC\u306a\u3057\u3067\u9ad8\u901f\u3068\u3044\u3063\u305f\u3053\u3068\u304c\u3088\u304f\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305d\u308c\u3089\u3082Rust\u306e\u5229\u70b9\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u500b\u4eba\u7684\u306b\u9b45\u529b\u3092\u611f\u3058\u308b\u90e8\u5206\u306e\u4e00\u3064\u306b\u300c\u53b3\u5bc6\u306a\u578b\u4ed8\u3051\u3092\u3059\u308b\u6587\u5316\u300d\u304c\u3042\u308b\u3068\u601d\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u306f\u3042\u307e\u308a\u660e\u6587\u5316\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u500b\u4eba\u7684\u306b\u611f\u3058\u3066\u3044\u308b\u3060\u3051\u306a\u306e\u3067\u3059\u304c\u3001Rust\u3092\u4f7f\u3046\u52d5\u6a5f\u306e1\u3064\u306b\u306a\u308a\u3046\u308b\u3068\u601d\u3046\u306e\u3067\u3001\u3053\u3053\u3067\u5ba3\u4f1d\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n

\u3061\u306a\u307f\u306b\u3053\u306e\u8a18\u4e8b\u306e\u304d\u3063\u304b\u3051\u306e1\u3064\u304c<\/p>\n

\u30a2\u30f3\u30b5\u30fc\uff1a \u306a\u305cTypeScript\u306e\u578b\u5b9a\u7fa9\u306b\u51dd\u308b\u306e\u304b<\/p>\n

\u3067\u3059\u3002\u3053\u308c\u3092\u8aad\u3093\u3067\u3044\u3066\u3001\u300c\u81ea\u5206\u306fRust\u306e\u578b\u4ed8\u3051\u65b9\u91dd\u304c\u597d\u304d\u306a\u3093\u3060\u306a\u3041\u300d\u3068\u3042\u3089\u305f\u3081\u3066\u6c17\u3065\u304d\u307e\u3057\u305f\u3002
\n\u6280\u8853\u7684\u306a\u6b63\u78ba\u6027\u3088\u308a\u300c\u6c17\u6301\u3061\u300d\u591a\u3081\u306a\u306e\u3067\u30dd\u30a8\u30e0\u3068\u3044\u3046\u3053\u3068\u3067\u3002<\/p>\n

\u300c\u53b3\u5bc6\u306a\u578b\u4ed8\u3051\u3092\u3059\u308b\u6587\u5316\u300d\u3068\u306f<\/h1>\n

Rust\u306f\u9759\u7684\u578b\u4ed8\u304d\u8a00\u8a9e\u306a\u306e\u3067\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u4e0a\u306e\u69d8\u3005\u306a\u3068\u3053\u308d\u3067\u578b\u4ed8\u3051\u304c\u884c\u308f\u308c\u307e\u3059\u3002\u3053\u308c\u81ea\u4f53\u306f\u4ed6\u306e\u9759\u7684\u578b\u4ed8\u304d\u8a00\u8a9e\u3068\u540c\u69d8\u3067\u3059\u304c\u3001Rust\u3067\u306f\u3069\u306e\u3088\u3046\u306a\u578b\u3092\u4ed8\u3051\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306b\u3064\u3044\u3066\u3001\u6bd4\u8f03\u7684\u53b3\u5bc6\u306b\u8003\u3048\u308b\u50be\u5411\u304c\u3042\u308b\u3068\u601d\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u4f8b\u3048\u3070\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u95a2\u6570\u306e\u5b9a\u7fa9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

pub<\/span> fn<\/span> open<\/span><<\/span>P<\/span>:<\/span> AsRef<\/span><<\/span>Path<\/span>>><\/span>(<\/span>path<\/span>:<\/span> P<\/span>)<\/span> -><\/span> Result<\/span><<\/span>File<\/span>><\/span>\r\n<\/code><\/pre>\n
\u6bd4\u8f03\u306e\u305f\u3081\u306b\u4ed6\u306e\u30e2\u30c0\u30f3\u306a\u9759\u7684\u578b\u4ed8\u304d\u8a00\u8a9e\u3068\u3057\u3066Scala\u3068Go\u3082\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\n\uff08Scala\u306eSource.fromFile\u306f\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3044\u3066\u8aad\u307f\u8fbc\u307f\u307e\u3067\u884c\u3046\u306e\u3067\u5358\u7d14\u306b\u6bd4\u8f03\u306f\u3067\u304d\u307e\u305b\u3093\u304c\u3001\u4ee5\u964d\u306e\u8a71\u306b\u306f\u3042\u307e\u308a\u95a2\u4fc2\u306a\u3044\u306e\u3067\u6c17\u306b\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\uff09<\/p>\n
def<\/span> fromFile<\/span>(<\/span>file<\/span>:<\/span> File<\/span>)<\/span>:<\/span> BufferedSource<\/span>\r\n<\/code><\/pre>\n
func<\/span> Open<\/span>(<\/span>name<\/span> string<\/span>)<\/span> (<\/span>*<\/span>File<\/span>,<\/span> error<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u3071\u3063\u3068\u898b\u3067Rust\u306e\u578b\u304c\u4e00\u756a\u8907\u96d1\u3060\u3068\u611f\u3058\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u8907\u96d1\u3088\u308a\u5358\u7d14\u3067\u3042\u308b\u65b9\u304c\u826f\u3055\u305d\u3046\u306a\u6c17\u3082\u3057\u307e\u3059\u304c\u3001Rust\u306e\u8907\u96d1\u3055\u306b\u306f\u7406\u7531\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e3\u3064\u306e\u95a2\u6570\u306b\u3064\u3044\u3066\u3001\u5f15\u6570\u578b\u3068\u8fd4\u308a\u5024\u578b\u3092\u305d\u308c\u305e\u308c\u6bd4\u8f03\u3057\u306a\u304c\u3089\u305d\u306e\u7406\u7531\u3092\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
\u5f15\u6570\u578b\u306e\u6bd4\u8f03<\/h2>\n
\u307e\u305a\u5f15\u6570\u304b\u3089\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002Rust\u306e\u5f15\u6570\u306fpath:P\u3067\u3059\u3002\u3053\u308c\u306f\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u306b\u306a\u3063\u3066\u3044\u3066\u3001P\u578b\u306e\u5909\u6570path\u3067\u3059\u3002\u3053\u306eP\u578b\u306fP: AsRef\u3068\u3042\u308b\u3088\u3046\u306b\u3001AsRef\u3092\u6e80\u305f\u3059\u4f55\u3089\u304b\u306e\u578b\u3092\u793a\u3057\u307e\u3059\u3002AsRef\u3068\u3044\u3046\u306e\u306f\u305d\u306e\u578b\u304cX\u578b\u306b\u5909\u63db\u53ef\u80fd\uff08\u53b3\u5bc6\u306b\u306f\u3061\u3087\u3063\u3068\u9055\u3044\u307e\u3059\u304c\u305d\u3093\u306a\u96f0\u56f2\u6c17\u3067\u3059\uff09\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u4ee5\u4e0a\u3092\u307e\u3068\u3081\u308b\u3068Path\u578b\u306b\u5909\u63db\u53ef\u80fd\u306a\u4f55\u3089\u304b\u306e\u578b\u3092\u5f15\u6570\u306b\u53d6\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002
\n\u4f8b\u3048\u3070\u3001\u6587\u5b57\u5217\u578b\u3067\u3042\u308bString\u306fPath\u306b\u5909\u63db\u53ef\u80fd\u306a\u306e\u3067\u3001open\u306e\u5f15\u6570\u306b\u76f4\u63a5\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\n\uff08\u3053\u3053\u3082\u53b3\u5bc6\u306b\u306f\u6587\u5b57\u5217\u30ea\u30c6\u30e9\u30eb\u306fString\u3067\u306f\u306a\u3044\u306e\u3067\u3059\u304c\u4ee5\u4e0b\u7565\uff09<\/p>\n
let<\/span> file<\/span> =<\/span> open<\/span>(<\/span>\"file.txt\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u3053\u308c\u3068\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3066\u3044\u308b\u306e\u304cScala\u3067\u3059\u3002Scala\u3067\u306f\u95a2\u6570\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u306b\u3088\u308a\u3044\u304f\u3064\u304b\u306e\u578b\u306b\u5bfe\u3057\u3066\u540c\u3058\u95a2\u6570\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070<\/p>\n
def<\/span> fromFile<\/span>(<\/span>uri<\/span>:<\/span> URI<\/span>)<\/span>:<\/span> BufferedSource<\/span>\r\ndef<\/span> fromFile<\/span>(<\/span>name<\/span>:<\/span> String<\/span>)<\/span>:<\/span> BufferedSource<\/span>\r\n<\/code><\/pre>\n
\u306e\u3088\u3046\u306a\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001URI\u3084\u6587\u5b57\u5217\u3067\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u6e21\u3059\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
val<\/span> file<\/span> =<\/span> Source<\/span>.<\/span>fromFile<\/span>(<\/span>\"file.txt\"<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u306e\u826f\u3044\u70b9\u3068\u3057\u3066\u306f\u5f15\u6570\u306e\u500b\u6570\u3092\u5909\u3048\u3089\u308c\u308b\u306e\u3067\u3001\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306a\u4f55\u304b\u3092\u8868\u73fe\u3057\u3084\u3059\u3044\u3068\u3044\u3046\u70b9\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u4e00\u65b9Rust\u306fpath\u3068\u3057\u3066\u6e21\u305b\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u578b\u3092\u3088\u308a\u53b3\u5bc6\u306b\u8868\u73fe\u3057\u3066\u3044\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u307e\u305fPath\u578b\u3082\u6ce8\u76ee\u306b\u5024\u3057\u307e\u3059\u3002Go\u306f\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3068\u3057\u3066string\u3092\u3068\u308a\u307e\u3059\u304c\u3001\u305d\u308c\u3068\u540c\u3058\u3088\u3046\u306b\u666e\u901a\u306e\u6587\u5b57\u5217\u578b\uff08\u3064\u307e\u308aString\uff09\u306b\u3057\u306a\u304b\u3063\u305f\u306e\u306f\u306a\u305c\u3067\u3057\u3087\u3046\u304b\uff1f
\n\u305d\u308c\u306f\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304cOS\u4f9d\u5b58\u306e\u305f\u3081\u3067\u3059\u3002Rust\u3067\u306f\u6587\u5b57\u5217\u578b\u306fUTF-8\u3068\u6c7a\u307e\u3063\u3066\u3044\u307e\u3059\u3002\u4e00\u65b9\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u306fWindows\u306a\u3089UTF-16\u3067\u3059\u3057\u3001Linux\u306a\u3089\u6700\u8fd1\u306fUTF-8\u304c\u591a\u3044\u3067\u3059\u304c\u3001\u5fc5\u305a\u3057\u3082\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067Rust\u3067\u306f\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u8868\u3059\u305f\u3081\u306e\u6587\u5b57\u5217\u578b\u3068\u3057\u3066OsString\u3068\u3044\u3046OS\u4f9d\u5b58\u306e\u6587\u5b57\u5217\u578b\u3092\u7528\u610f\u3057\u3001\u305d\u308c\u3092\u30e9\u30c3\u30d7\u3059\u308b\u5f62\u3067Path\u578b\u3092\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u3002Path\u578b\u306fOsString\u306b\u52a0\u3048\u3066\u30d1\u30b9\u533a\u5207\u308a\u6587\u5b57\u3084\u62e1\u5f35\u5b50\u306a\u3069\u3082\u542b\u3081\u3066\u6271\u3048\u308b\u578b\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002
\n\u3053\u306e\u3088\u3046\u306bOsString\u3092\u5225\u9014\u7528\u610f\u3059\u308b\u3053\u3068\u3067\u3001UTF-8\u6587\u5b57\u5217\u3067\u3042\u308bString\u3068\u3057\u3066\u4f7f\u3046\u306b\u306f\u5225\u9014\u5909\u63db\u304c\u5fc5\u8981\u3067\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u3001\u3055\u3089\u306b\u305d\u306e\u5909\u63db\u304c\u5931\u6557\u3059\u308b\u53ef\u80fd\u6027\u3082\u793a\u5506\u3055\u308c\u307e\u3059\u3002<\/p>\n
Scala\u306eFile\u578b\u306fJava\u7531\u6765\u306e\u578b\u3067\u3001Rust\u306ePath\u3068\u540c\u3058\u3088\u3046\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306a\u8907\u96d1\u306a\u578b\u69cb\u6210\u306f\u4e00\u898b\u9762\u5012\u3067\u3059\u304c\u3001\u3053\u306e\u578b\u306b\u5f93\u3063\u3066\u3044\u308b\u9650\u308a\u3001Windows\/Linux\/macOS\u3068\u3044\u3063\u305f\u4e3b\u8981\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u30de\u30eb\u30c1\u30d0\u30a4\u30c8\u6587\u5b57\u3092\u542b\u3093\u3060\u30d1\u30b9\u3092\u554f\u984c\u306a\u304f\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u4e00\u65b9Go\u306e\u5834\u5408\u3001\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u304cstring\u3067\u3042\u308b\u3068\u3044\u3046\u306e\u306f\u975e\u5e38\u306b\u30b7\u30f3\u30d7\u30eb\u3067\u308f\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u304c\u3001\u305d\u3053\u306bUTF-8\u3067\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u683c\u7d0d\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u3044\u308d\u3044\u308d\u3068\u554f\u984c\u304c\u751f\u3058\u305d\u3046\u3067\u3059\u3002
\n\uff08Go\u306f\u3042\u307e\u308a\u8a73\u3057\u304f\u306a\u3044\u306e\u3067\u3001\u300c\u5b9f\u306f\u554f\u984c\u306a\u3044\u3088\u300d\u3068\u3044\u3063\u305f\u7a81\u3063\u8fbc\u307f\u304c\u3042\u308c\u3070\u304a\u9858\u3044\u3057\u307e\u3059\uff09<\/p>\n
\u623b\u308a\u5024\u578b\u306e\u6bd4\u8f03<\/h2>\n
\u9577\u304f\u306a\u3063\u3066\u304d\u305f\u306e\u3067\u5143\u306e\u95a2\u6570\u3092\u518d\u63b2\u3057\u307e\u3059\u3002<\/p>\n
pub<\/span> fn<\/span> open<\/span><<\/span>P<\/span>:<\/span> AsRef<\/span><<\/span>Path<\/span>>><\/span>(<\/span>path<\/span>:<\/span> P<\/span>)<\/span> -><\/span> Result<\/span><<\/span>File<\/span>><\/span>\r\n<\/code><\/pre>\n
def<\/span> fromFile<\/span>(<\/span>file<\/span>:<\/span> File<\/span>)<\/span>:<\/span> BufferedSource<\/span>\r\n<\/code><\/pre>\n
func<\/span> Open<\/span>(<\/span>name<\/span> string<\/span>)<\/span> (<\/span>*<\/span>File<\/span>,<\/span> error<\/span>)<\/span>\r\n<\/code><\/pre>\n
Rust\u306e\u623b\u308a\u5024\u578b\u306fResult\u3001Scala\u306fBufferdSource\u3001Go\u306f(*File, error)\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u305d\u306e\u307e\u307e\u5404\u8a00\u8a9e\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u65b9\u91dd\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u307e\u305aRust\u306eResult\u306f\u300c\u578bX\u3042\u308b\u3044\u306f\u30a8\u30e9\u30fc\u306e\u3069\u3061\u3089\u304b\u300d\u3092\u8868\u3059\u578b\u3067\u3059\u3002
\n\u6b63\u78ba\u306b\u306fResult<T, E>\u3068\u3044\u3046\u578b\u304c\u300cT\u578b\u3042\u308b\u3044\u306f\u30a8\u30e9\u30fc\u578bE\u306e\u3069\u3061\u3089\u304b\u300d\u3092\u8868\u3057\u3066\u304a\u308a\u3001\u3053\u3053\u306eResult\u306fResult<X, std::io::Error>\u306e\u578b\u30a8\u30a4\u30ea\u30a2\u30b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002
\n\uff08Rust\u306f\u3042\u307e\u308a\u7701\u7565\u3092\u826f\u3057\u3068\u3057\u306a\u3044\u8a00\u8a9e\u306a\u306e\u3067\u3001\u3053\u306e\u3088\u3046\u306a\u7701\u7565\u306f\u6bd4\u8f03\u7684\u73cd\u3057\u3044\u3068\u611f\u3058\u307e\u3059\uff09
\n\u3059\u306a\u308f\u3061Result\u306fFile\u304bIO\u30a8\u30e9\u30fc\u304c\u8fd4\u3063\u3066\u304f\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002
\n\u3053\u306eResult\u306fFile\u578b\u305d\u306e\u3082\u306e\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u5b9f\u969b\u306b\u4f7f\u3046\u3068\u304d\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306bResult\u304b\u3089\u4e2d\u8eab\u3092\u53d6\u308a\u51fa\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
let<\/span> file<\/span> =<\/span> open<\/span>(<\/span>\"file.txt\"<\/span>);<\/span>\r\nmatch<\/span> file<\/span> {<\/span>\r\n    Ok<\/span>(<\/span>file<\/span>)<\/span> =><\/span> \/\/ file\u3092\u4f7f\u3046<\/span>\r\n    Err<\/span>(<\/span>x<\/span>)<\/span> =><\/span> \/\/ \u30a8\u30e9\u30fc\u51e6\u7406<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5b9f\u969b\u306b\u306f\u3044\u308d\u3044\u308d\u3068\u4fbf\u5229\u306a\u66f8\u304d\u65b9\u304c\u3042\u308b\u306e\u3067\u6bce\u56de\u3053\u306e\u3088\u3046\u306a\u5206\u5c90\u3092\u66f8\u304f\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u3053\u306e\u3088\u3046\u306b\u4f55\u3089\u304b\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u3092\u5f37\u5236\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u4f3c\u305f\u3088\u3046\u306a\u69cb\u6210\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u304cGo\u3067\u3059\u3002(*File, error)\u3068\u3042\u308b\u3088\u3046\u306bFile\u3068\u30a8\u30e9\u30fc\u306e\u6709\u7121\u304c\u4e00\u7dd2\u306b\u8fd4\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n
file<\/span>,<\/span> err<\/span> :=<\/span> os<\/span>.<\/span>Open<\/span>(<\/span>\"file.txt\"<\/span>)<\/span>\r\nif<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n    \/\/ \u30a8\u30e9\u30fc\u51e6\u7406<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u3053\u3061\u3089\u306f\u30a8\u30e9\u30fc\u51e6\u7406\u3092\u3057\u306a\u304b\u3063\u305f\u3068\u3057\u3066\u3082file\u306f\u554f\u984c\u306a\u304f\u4f7f\u3048\u307e\u3059\u304c\u3001\u3053\u306e\u3088\u3046\u306berr\u304c\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067\u4f55\u3089\u304b\u306e\u51e6\u7406\u3092\u3059\u308b\u5fc5\u8981\u6027\u3092\u611f\u3058\u3055\u305b\u307e\u3059\u3002<\/p>\n
Rust\u3068Go\u306f\u623b\u308a\u5024\u578b\u306e\u65b9\u91dd\u304c\u3088\u304f\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u30a8\u30e9\u30fc\u578b\u306e\u8868\u73fe\u304c\u7570\u306a\u308a\u307e\u3059\u3002Rust\u306b\u304a\u3051\u308b\u30a8\u30e9\u30fc\u578b\u306fstd::io::Error\u3067\u3001\u3053\u308c\u306fIO\u30a8\u30e9\u30fc\u3092\u8868\u3059\u5c02\u7528\u306e\u578b\u3067\u3059\u3002\u3053\u306e\u578b\u306f.kind()\u30e1\u30bd\u30c3\u30c9\u3067ErrorKind\u3068\u3044\u3046\u578b\u306e\u30a8\u30e9\u30fc\u7a2e\u5225\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002ErrorKind\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306bIO\u30a8\u30e9\u30fc\u3067\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30a8\u30e9\u30fc\u304c\u5217\u6319\u3055\u308c\u3066\u3044\u307e\u3059\u3002
\n\uff08\u5b9f\u969b\u306b\u306fopen\u3067\u306f\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u306a\u3044\u30a8\u30e9\u30fc\u307e\u3067\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u3092\u53d6\u308a\u9664\u304b\u306a\u304b\u3063\u305f\u306e\u306f\u30a8\u30e9\u30fc\u578b\u306e\u7a2e\u985e\u304c\u5897\u3048\u3059\u304e\u308b\u306e\u3092\u907f\u3051\u308b\u305f\u3081\u3067\u3057\u3087\u3046\u304b\uff09<\/p>\n
pub<\/span> enum<\/span> ErrorKind<\/span> {<\/span>\r\n    NotFound<\/span>,<\/span>\r\n    PermissionDenied<\/span>,<\/span>\r\n    ConnectionRefused<\/span>,<\/span>\r\n    ConnectionReset<\/span>,<\/span>\r\n    ConnectionAborted<\/span>,<\/span>\r\n    NotConnected<\/span>,<\/span>\r\n    AddrInUse<\/span>,<\/span>\r\n    AddrNotAvailable<\/span>,<\/span>\r\n    BrokenPipe<\/span>,<\/span>\r\n    AlreadyExists<\/span>,<\/span>\r\n    WouldBlock<\/span>,<\/span>\r\n    InvalidInput<\/span>,<\/span>\r\n    InvalidData<\/span>,<\/span>\r\n    TimedOut<\/span>,<\/span>\r\n    WriteZero<\/span>,<\/span>\r\n    Interrupted<\/span>,<\/span>\r\n    Other<\/span>,<\/span>\r\n    UnexpectedEof<\/span>,<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4e00\u65b9Go\u306ferror\u578b\u304c\u8fd4\u3063\u3066\u304d\u307e\u3059\u3002\u3053\u308c\u306ferror\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u578b\u3067\u3042\u308a\u3001\u6c4e\u7528\u306e\u30a8\u30e9\u30fc\u578b\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3082\u3061\u308d\u3093\u5185\u90e8\u7684\u306b\u306f\u5b9f\u969b\u306e\u30a8\u30e9\u30fc\u60c5\u5831\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\u306e\u3067<\/p>\n
if<\/span> os<\/span>.<\/span>IsNotExist<\/span>(<\/span>err<\/span>)<\/span> {<\/span>\r\n    \/\/ \u30d5\u30a1\u30a4\u30eb\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u3068\u304d\u306e\u30a8\u30e9\u30fc\u51e6\u7406<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u306e\u3088\u3046\u306b\u30a8\u30e9\u30fc\u3092\u5224\u5225\u3059\u308b\u3053\u3068\u306f\u53ef\u80fd\u3067\u3059\u304c\u3001Rust\u306e\u3088\u3046\u306b\u578b\u30ec\u30d9\u30eb\u3067\u3069\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3092\u793a\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
Scala\u306f\u3053\u308c\u3089\u3068\u306f\u7570\u306a\u308a\u3001\u4f8b\u5916\u3067\u30a8\u30e9\u30fc\u3092\u9001\u51fa\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u4ee5\u4e0b\u306e\u3088\u3046\u306btry\u3067\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u5fc5\u8981\u6027\u306b\u3064\u3044\u3066\u3001\u95a2\u6570\u578b\u304b\u3089\u77e5\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u8aad\u3093\u3067\u3001\u3069\u306e\u95a2\u6570\u304b\u3089\u3069\u306e\u3088\u3046\u306a\u4f8b\u5916\u304c\u51fa\u308b\u304b\u3092\u628a\u63e1\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
try<\/span> {<\/span>\r\n    val<\/span> file<\/span> =<\/span> Source<\/span>.<\/span>fromFile<\/span>(<\/span>\"file.txt\"<\/span>)<\/span>\r\n}<\/span> catch<\/span> {<\/span>\r\n    \/\/ \u30a8\u30e9\u30fc\u51e6\u7406<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u3053\u306e\u3088\u3046\u306bRust\u306e\u623b\u308a\u5024\u578b\u306f3\u3064\u306e\u4e2d\u3067\u6700\u3082\u60c5\u5831\u91cf\u304c\u591a\u304f\u3001\u3069\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u307e\u3067\u578b\u60c5\u5831\u306b\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u307e\u3068\u3081<\/h2>\n
\u3053\u3053\u307e\u3067\u306e\u8aac\u660e\u3067Rust\u304c\u300c\u3044\u308d\u3044\u308d\u306a\u3053\u3068\u306b\u57f7\u62d7\u306b\u578b\u4ed8\u3051\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u300d\u3068\u3044\u3046\u96f0\u56f2\u6c17\u3092\u3064\u304b\u3093\u3067\u3044\u305f\u3060\u3051\u305f\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306a\u578b\u4ed8\u3051\u306b\u306f\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u30c7\u30e1\u30ea\u30c3\u30c8\u3068\u3057\u3066\u8003\u3048\u3089\u308c\u308b\u306e\u306f\u521d\u898b\u6bba\u3057\u3067\u3042\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002Rust\u306e\u5b66\u7fd2\u66f2\u7dda\u304c\u6025\u306a\u7406\u7531\u3068\u3057\u3066\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u304c\u3088\u304f\u6319\u3052\u3089\u308c\u307e\u3059\u304c\u3001\u500b\u4eba\u7684\u306b\u306f\u3053\u306e\u3088\u3046\u306a\u578b\u4ed8\u3051\u3082\u5927\u3044\u306b\u5f71\u97ff\u3057\u3066\u3044\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u578b\u3092\u3042\u308b\u7a0b\u5ea6\u899a\u3048\u308b\u307e\u3067\u306f\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u898b\u3066\u3082\u3055\u3063\u3071\u308a\u308f\u304b\u3089\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002
\n\u3067\u3059\u304c\u578b\u306e\u60c5\u5831\u91cf\u304c\u8c4a\u5bcc\u306a\u306e\u3067\u3001\u6163\u308c\u3066\u304f\u308b\u3068\u305d\u308c\u3060\u3051\u3067\u3060\u3044\u305f\u3044\u306e\u4f7f\u3044\u65b9\u304c\u5206\u304b\u3063\u3066\u304d\u307e\u3059\u3002\u308f\u3056\u308f\u3056\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u63a2\u3057\u305f\u308a\u3001\u82f1\u8a9e\u306e\u8aac\u660e\u3092\u8aad\u3093\u3060\u308a\u3057\u306a\u304f\u3066\u3082\u3001\u3044\u304d\u306a\u308a\u4f7f\u3048\u3066\u3057\u307e\u3046\u30b1\u30fc\u30b9\u3082\u591a\u3044\u3067\u3059\u3002
\n\u307e\u305f\u3001\u4f8b\u5916\u7684\u306a\u30b1\u30fc\u30b9\u3084\u30a8\u30e9\u30fc\u30d1\u30b9\u3082\u578b\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u4e2d\u306b\u4f55\u306b\u6c17\u3092\u3064\u3051\u308b\u3079\u304d\u306a\u306e\u304b\u5206\u304b\u308a\u3084\u3059\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u4e00\u65b9Go\u306f\u578b\u4ed8\u3051\u306e\u65b9\u91dd\u304b\u3089\u3057\u3066\u521d\u671f\u306e\u5b66\u7fd2\u304c\u5bb9\u6613\u306a\u65b9\u306b\u632f\u3063\u3066\u3044\u308b\u306a\u3001\u3068\u611f\u3058\u307e\u3059\u3002\u305d\u308c\u306f\u5fc5\u305a\u3057\u3082\u3044\u3044\u3053\u3068\u3070\u304b\u308a\u3067\u306f\u306a\u304f\u3001\u30b3\u30fc\u30ca\u30fc\u30b1\u30fc\u30b9\u3092\u8003\u3048\u308b\u5fc5\u8981\u304c\u751f\u3058\u305f\u3068\u304d\u306b\u5404\u30d7\u30ed\u30b0\u30e9\u30de\u304c\u6c17\u3092\u3064\u3051\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3001\u3068\u3044\u3046\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002
\n\u3053\u306e\u3042\u305f\u308a\u6614\u8aad\u3093\u3060Joel On Software\u306e\u300c\u6f0f\u308c\u306e\u3042\u308b\u62bd\u8c61\u5316\u300d\u3068\u3044\u3046\u8a71\u3092\u601d\u3044\u51fa\u3057\u307e\u3059\u3002\uff08\u7c21\u5358\u306b\u8a00\u3046\u3068\u3069\u3093\u306a\u306b\u9811\u5f35\u3063\u3066\u62bd\u8c61\u5316\u3057\u3066\u3082\u3069\u3053\u304b\u3057\u3089\u3046\u307e\u304f\u62bd\u8c61\u5316\u3067\u304d\u306a\u3044\u300c\u6f0f\u308c\u300d\u304c\u767a\u751f\u3059\u308b\u3001\u3068\u3044\u3046\u8a71\u3067\u3059\uff09
\n\u3064\u307e\u308aRust\u306f\u904e\u5ea6\u306a\u62bd\u8c61\u5316\u3092\u305b\u305a\u5185\u90e8\u306e\u8907\u96d1\u3055\u3092\u305d\u306e\u307e\u307e\u578b\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u3066\u9732\u51fa\u3055\u305b\u308b\u306e\u306b\u5bfe\u3057\u3066\u3001Go\u306f\u4f7f\u3044\u3084\u3059\u3044\u62bd\u8c61\u5316\u3092\u63d0\u4f9b\u3059\u308b\u3051\u3069\u3069\u3046\u3057\u3066\u3082\u6f0f\u308c\u3066\u3057\u307e\u3046\u3001\u3068\u3044\u3046\u3053\u3068\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002
\n\u5b9f\u306e\u3068\u3053\u308dRust\u306e\u62bd\u8c61\u5316\u3082\u6c7a\u3057\u3066\u5b8c\u5168\u306a\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\uff08\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u3067\u306e\u7834\u7dbb\u306f\u5f53\u7136\u3042\u308b\u3068\u601d\u3044\u307e\u3059\uff09\u4e3b\u8981\u306a\u8a00\u8a9e\u306e\u4e2d\u3067\u306f\u304b\u306a\u308a\u5c11\u306a\u304f\u306a\u308b\u3088\u3046\u306a\u52aa\u529b\u304c\u898b\u3089\u308c\u308b\u3001\u3068\u3044\u3046\u5370\u8c61\u3067\u3059\u3002<\/p>\n
Scala\u306f\u305d\u308c\u3089\u306e\u4e2d\u9593\u7684\u306a\u7acb\u3061\u4f4d\u7f6e\u304b\u306a\u3001\u3068\u601d\u3044\u307e\u3059\u3002Scala\u306fJava\u3068\u306e\u76f8\u4e92\u904b\u7528\u6027\u3082\u91cd\u8996\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305d\u306e\u3042\u305f\u308a\u3082\u5f71\u97ff\u3057\u3066\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n
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\n\u306a\u306e\u3067\u3001\u3053\u306e\u578b\u4ed8\u3051\u306f\u6587\u5316\u306a\u306e\u3060\u3068\u601d\u3044\u307e\u3059\u3002\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u3053\u306e\u3088\u3046\u306a\u578b\u4ed8\u3051\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3082\u81ea\u7136\u3068\u4f3c\u305f\u3088\u3046\u306a\u578b\u4ed8\u3051\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u81ea\u5206\u306f\u3053\u306e\u3088\u3046\u306a\u53b3\u5bc6\u6027\u304c\u3068\u3066\u3082\u597d\u304d\u3067\u3059\u304c\u3001\u300c\u3053\u3093\u306a\u7d30\u304b\u3044\u3053\u3068\u306f\u6c17\u306b\u305b\u305a\u306b\u5feb\u9069\u306b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3057\u305f\u3044\u300d\u3068\u3044\u3046\u65b9\u3082\u5f53\u7136\u3044\u308b\u3067\u3057\u3087\u3046\u3002\u5b9f\u969bRust\u3092\u8a66\u3057\u3066\u307f\u305f\u3051\u3069\u5408\u308f\u306a\u304b\u3063\u305f\u4eba\u306e\u8a71\u3068\u3057\u3066\u3001\u578b\u304c\u8907\u96d1\u3059\u304e\u308b\u3001\u3068\u3044\u3046\u306e\u3082\u805e\u3044\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u306f\u3069\u3061\u3089\u304c\u6b63\u3057\u3044\u3068\u3044\u3063\u305f\u8a71\u3067\u306f\u306a\u304f\u3001\u8da3\u5473\u8da3\u5411\u306e\u554f\u984c\u306a\u306e\u3060\u3068\u601d\u3044\u307e\u3059\u3002\u306a\u306e\u3067\u3001\u3053\u306e\u8a71\u306b\u5171\u611f\u3055\u308c\u305f\u65b9\u306b\u306f\u305c\u3072Rust\u3092\u8a66\u3057\u3066\u307f\u3066\u307b\u3057\u3044\u3068\u601d\u3044\u307e\u3059\u3002Rust\u306e\u9ad8\u901f\u6027\u3084\u5b89\u5168\u6027\u304c\u5fc5\u305a\u3057\u3082\u5fc5\u8981\u3067\u306a\u3044\u5206\u91ce\u3067\u3042\u3063\u3066\u3082\u3001\u624b\u306b\u306a\u3058\u3080\u9053\u5177\u3068\u3057\u3066\u4f7f\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u306f\u3058\u3081\u306b Rust\u306e\u7279\u5fb4\u3068\u3057\u3066\u306f\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3084GC\u306a\u3057\u3067\u9ad8\u901f\u3068\u3044\u3063\u305f\u3053\u3068\u304c\u3088\u304f\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305d\u308c\u3089\u3082Rust\u306e […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45231","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\/45231-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u306f\u3058\u3081\u306b Rust\u306e\u7279\u5fb4\u3068\u3057\u3066\u306f\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3084GC\u306a\u3057\u3067\u9ad8\u901f\u3068\u3044\u3063\u305f\u3053\u3068\u304c\u3088\u304f\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305d\u308c\u3089\u3082Rust\u306e […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45231-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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