{"id":25105,"date":"2019-12-20T08:00:13","date_gmt":"2019-12-19T23:00:13","guid":{"rendered":"https:\/\/www.techscore.com\/blog\/?p=25105"},"modified":"2020-01-14T14:53:28","modified_gmt":"2020-01-14T05:53:28","slug":"converting-between-numbers-and-strings-2019","status":"publish","type":"post","link":"https:\/\/www.techscore.com\/blog\/2019\/12\/20\/converting-between-numbers-and-strings-2019\/","title":{"rendered":"\u3042\u3048\u3066\u8a00\u3046\u307b\u3069\u3067\u306f\u306a\u3044 \u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db 2019 \u5e74\u4eba\u6c17\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u30c8\u30c3\u30d7 10 \u7de8"},"content":{"rendered":"
\u3053\u308c\u306f \ud83d\ude3aTECHSCORE Advent Calendar 2019\ud83d\ude3a<\/a> \u306e 20 \u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n \u3053\u3093\u306b\u3061\u306f\u3002\u6842\u5ddd\u3067\u3059\u3002\u793e\u4f1a\u4eba\u3068\u3057\u3066\u50cd\u304d\u59cb\u3081\u3066\u7d04 9 \u30ab\u6708\u304c\u7d4c\u904e\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u307e\u3067\u306b\u8907\u6570\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306b\u89e6\u308c\u308b\u6a5f\u4f1a\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u672a\u7d4c\u9a13\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306b\u89e6\u308c\u308b\u3068\u3057\u3066\u3082\u3001\u57fa\u672c\u7684\u306a\u8a18\u8ff0\u65b9\u6cd5\u306f\u52d8\u3067\u308f\u304b\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u3084\u306f\u308a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3054\u3068\u306b\u76f8\u9055\u70b9\u304c\u3042\u308b\u305f\u3081\u3001 Web 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\u672c\u8a18\u4e8b\u3067\u5bfe\u8c61\u3068\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u3042\u308b GitHub<\/a> \u304c\u767a\u8868\u3057\u305f\u5e74\u6b21\u30ec\u30dd\u30fc\u30c8 Octoverse <\/a> \u3088\u308a\u3001\u201c2019 \u5e74\u4eba\u6c17\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u30c8\u30c3\u30d7 10\u201d\uff08 Octoverse \u306b\u304a\u3051\u308b Top languages \uff09\u3068\u3057\u307e\u3059[1]<\/a>\u3002<\/p>\n \u4ee5\u4e0b\u3001\u5404\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u3092\u5b9f\u73fe\u3059\u308b\u30b3\u30fc\u30c9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n \u203b\u4eca\u56de\u3001\u6271\u3046\u6570\u5024\u306f\u6574\u6570\u578b\u306b\u9650\u5b9a\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u5909\u63db\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u629c\u7c8b\u3057\u3066\u304a\u308a\u3001\u3059\u3079\u3066\u3092\u7db2\u7f85\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3054\u3056\u3044\u307e\u305b\u3093\u3002\u4ee5\u4e0a\u306b\u3064\u3044\u3066\u3001\u3042\u3089\u304b\u3058\u3081\u3054\u4e86\u627f\u304f\u3060\u3055\u3044\u307e\u305b\u3002<\/p>\n JavaScript \u306f\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306a Web \u30b5\u30a4\u30c8\u306e\u69cb\u7bc9\u3001\u30b2\u30fc\u30e0\u306e\u5236\u4f5c\u306b\u3082\u4f7f\u7528\u3055\u308c\u308b\u4e3b\u8981\u306a\u8a00\u8a9e\u3067\u3059\u3002\u5909\u6570\u306e\u578b\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3084\u5b9f\u884c\u3088\u308a\u524d\u306b\u6c7a\u3081\u306a\u3044\u3068\u3044\u3046\u3001\u52d5\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3059\u3002JavaScript \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002JavaScript \u306e\u5b9f\u884c\u74b0\u5883\u3067\u3042\u308b Node.js \u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306f 12.13.1 \u3092\u4f7f\u7528\u3057\u307e\u3057\u305f\u3002<\/p>\n \u7a7a\u767d\u306e\u6587\u5b57\u5217\u3092\u8db3\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n \u56db\u5247\u6f14\u7b97\u306b\u3088\u3063\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n Python \u306f\u3055\u307e\u3056\u307e\u306a\u7528\u9014\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u7279\u306b\u8fd1\u5e74\u3067\u306f\u4eba\u5de5\u77e5\u80fd\u3092\u4f7f\u7528\u3057\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u3084\u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30b9\u306e\u5206\u91ce\u3067\u4f7f\u7528\u3055\u308c\u308b\u8a00\u8a9e\u3068\u3057\u3066\u6ce8\u76ee\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u52d5\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3059\u3002\u307e\u305f\u3001\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u521d\u5b66\u8005\u306b\u3068\u3063\u3066\u5b66\u7fd2\u3057\u3084\u3059\u3044\u8a00\u8a9e\u3068\u3057\u3066\u3082\u8a8d\u77e5\u3055\u308c\u3066\u3044\u307e\u3059\u3002Python \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002\u4f7f\u7528\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306f 3.6.8 \u3067\u3059\u3002<\/p>\n \u7d44\u307f\u8fbc\u307f\u95a2\u6570 \u7d44\u307f\u8fbc\u307f\u95a2\u6570 \u305d\u3057\u3066\u3001 Java \u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306b\u57fa\u3065\u3044\u305f\u8a00\u8a9e\u3067\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u304a\u3088\u3073 Web \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u30b2\u30fc\u30e0\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u99c6\u52d5\u578b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u958b\u767a\u306a\u3069\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u5909\u6570\u306e\u578b\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3084\u5b9f\u884c\u3088\u308a\u524d\u306b\u3042\u3089\u304b\u3058\u3081\u6c7a\u3081\u308b\u3068\u3044\u3046\u3001\u9759\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3059\u3002Java \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002\u4f7f\u7528\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306f 1.8.0_202 \u3067\u3059\u3002<\/p>\n \u7a7a\u306e\u6587\u5b57\u5217\u306b\u8db3\u3059\u3053\u3068\u306b\u3088\u308a\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n PHP \u306f Web \u958b\u767a\u306b\u9069\u3057\u3066\u304a\u308a\u3001HTML \u306b\u57cb\u3081\u8fbc\u307f\u304c\u53ef\u80fd\u306a\u8a00\u8a9e\u3067\u3059\u3002\u52d5\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3059\u3002PHP \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002\u4f7f\u7528\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306f 7.2.26 \u3067\u3059\u3002<\/p>\n \u30ad\u30e3\u30b9\u30c8\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n \u30ad\u30e3\u30b9\u30c8\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n C\uff03 \u306f\u3001C \u304b\u3089\u6d3e\u751f\u3057\u305f\u8a00\u8a9e\u3067\u3059\u3002 Java \u3068\u4f3c\u305f\u8a00\u8a9e\u3067\u3059\u3002\u9759\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u3001\u30b2\u30fc\u30e0\u3001\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u958b\u767a\u306a\u3069\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002C# \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002\u4f7f\u7528\u3057\u305f\u30b3\u30f3\u30d1\u30a4\u30e9\u306f mcs \u3067\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u306f 6.6.0.161 \u3067\u3059\u3002<\/p>\n C++ \u306f C \u304b\u3089\u6d3e\u751f\u3057\u305f\u8a00\u8a9e\u3067\u3059\u3002\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3001\u30d6\u30e9\u30a6\u30b6\u3001\u30b2\u30fc\u30e0\u306a\u3069\u306b\u304a\u3051\u308b\u4e2d\u6838\u7684\u306a\u8a00\u8a9e\u3068\u3057\u3066\u3001\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u9759\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3059\u3002C++ \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002\u5bfe\u8c61\u3068\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306f C++11 \u3067\u3001\u4f7f\u7528\u3057\u305f\u30b3\u30f3\u30d1\u30a4\u30e9\u306f g++ \u3067\u30d0\u30fc\u30b8\u30e7\u30f3\u304c 4.8.5 \u3067\u3059\u3002<\/p>\n TypeScript \u306f\u3001JavaScript \u306b\u304a\u3044\u3066\u8ab2\u984c\u3068\u3057\u3066\u8003\u3048\u3089\u308c\u3066\u3044\u308b\u70b9\u3092\u88dc\u3046\u76ee\u7684\u3067\u958b\u767a\u3055\u308c\u305f\u8a00\u8a9e\u3067\u3059\u3002JavaScript \u304c\u52d5\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3042\u308b\u306e\u306b\u5bfe\u3057\u3066\u3001\u9759\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3042\u308b\u3068\u3044\u3046\u7279\u5fb4\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u610f\u56f3\u3057\u3066\u3044\u306a\u3044\u578b\u306e\u5024\u3092\u5909\u6570\u306b\u4ee3\u5165\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u5b9f\u884c\u524d\u306b\u4e0d\u5177\u5408\u306e\u691c\u51fa\u304c\u53ef\u80fd\u3067\u3042\u308b\u3068\u3044\u3046\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002TypeScript \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f JavaScript \u306e\u8a18\u8ff0\u306e\u4f7f\u7528\u304c\u53ef\u80fd\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u5272\u611b\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3002<\/p>\n Shell \u306f\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u64cd\u4f5c\u306a\u3069\u306b\u4f7f\u7528\u3067\u304d\u308b\u8a00\u8a9e\u3067\u3059\u3002Bash\u306a\u3069\u3067\u62e1\u5f35\u3055\u308c\u305f\u5834\u5408\u306f\u3068\u3082\u304b\u304f\u3001Shell \u306e\u5909\u6570\u306b\u306f\u30c7\u30fc\u30bf\u578b\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u4e00\u5f8b\u3067\u6587\u5b57\u5217\u578b\u3067\u3059\u3002\u305d\u308c\u3086\u3048\u3001\u6570\u5024 \u21d2 \u6587\u5b57\u5217\u3068\u3044\u3046\u51e6\u7406\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u56db\u5247\u6f14\u7b97\u306a\u3069\u6570\u5024\u306e\u8a08\u7b97\u304c\u53ef\u80fd\u3067\u3059\u3002\u4f7f\u7528\u3057\u305f Shell \u306f Bash \u3067\u30d0\u30fc\u30b8\u30e7\u30f3\u306f 4.4.20 \u3067\u3059\u3002<\/p>\n \u8a08\u7b97\u3092\u5b9f\u65bd\u3059\u308b\u5834\u5408\u306f\u5bfe\u8c61\u306e\u90e8\u5206\u3092 C \u306f\u3001\u4eca\u56de\u306e\u5bfe\u8c61\u3068\u3057\u3066\u3044\u308b Java\u3001PHP\u3001 JavaScript\u3001C#\u3001C++ \u3068\u3044\u3063\u305f\u591a\u304f\u306e\u8a00\u8a9e\u306e\u30eb\u30fc\u30c4\u3068\u3055\u308c\u3066\u3044\u308b\u8a00\u8a9e\u3067\u3059\u3002\u9759\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3059\u3002C \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002\u5bfe\u8c61\u3068\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306f C11 \u3067\u3001\u4f7f\u7528\u3057\u305f\u30b3\u30f3\u30d1\u30a4\u30e9\u306f gcc\u3067\u30d0\u30fc\u30b8\u30e7\u30f3\u304c 4.8.5 \u3067\u3059\u3002<\/p>\n \u4ed6\u306b\u3082 Ruby \u306f\u307e\u3064\u3082\u3068\u3086\u304d\u3072\u308d\u6c0f\u306b\u3088\u308a\u958b\u767a\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u8a00\u8a9e\u3067\u3059\u3002\u7279\u5fb4\u3068\u3057\u3066\u3001\u30b7\u30f3\u30d7\u30eb\u3055\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u52d5\u7684\u578b\u4ed8\u3051\u306e\u8a00\u8a9e\u3067\u3059\u3002Ruby \u306b\u304a\u3051\u308b\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002\u4f7f\u7528\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306f 2.0.0 \u3067\u3059\u3002<\/p>\n \u53ef\u8aad\u6027\u304c\u9ad8\u3044\u3067\u3059\u306d\u3002<\/p>\n \u201c2019 \u5e74\u4eba\u6c17\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u30c8\u30c3\u30d7 10\u201d\u3092\u5bfe\u8c61\u306b\u3001\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u3092\u5b9f\u73fe\u3059\u308b\u30b3\u30fc\u30c9\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u985e\u4f3c\u3057\u3066\u3044\u308b\u8a18\u8ff0\u65b9\u6cd5\u3082\u3042\u308c\u3070\u3001\u305d\u3046\u3067\u306a\u3044\u8a18\u8ff0\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3057\u305f\u306d\u3002\u3053\u308c\u3067\u3069\u3093\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3092\u4f7f\u3046\u3068\u3057\u3066\u3082\u3001\u201c\u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db\u201d\u306f\u30d0\u30c3\u30c1\u30ea\u3067\u3059\u2026<\/p>\n \u306f\u3058\u3081\u306b<\/p>\n \u3053\u308c\u306f \ud83d\ude3aTECHSCORE Advent Calendar 2019\ud83d\ude3a \u306e 20 \u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n \u3053\u3093\u306b\u3061\u306f\u3002\u6842\u5ddd\u3067\u3059\u3002\u793e\u4f1a\u4eba\u3068\u3057\u3066\u50cd\u304d\u59cb\u3081\u3066\u7d04 9 \u30ab\u6708\u304c\u7d4c\u904e\u3057\u307e\u3057\u305f\u3002\u3042\u3048\u3066\u8a00\u3046\u307b\u3069\u3067\u306f\u306a\u3044 \u6570\u5024 \u21d4 \u6587\u5b57\u5217\u5909\u63db<\/h1>\n
\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e<\/h2>\n
2019 \u5e74\u4eba\u6c17\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u30c8\u30c3\u30d7 10<\/h3>\n
\n
JavaScript<\/h2>\n
$ node -v\n12.13.1<\/pre>\n
\u6570\u5024 \u21d2 \u6587\u5b57\u5217<\/h3>\n
String<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
var i = 2019;\nvar s = String(i);\n<\/pre>\n
Number<\/code> \u30af\u30e9\u30b9\u306e
toString<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
var i = 2019;\nvar s = i.toString();\n<\/pre>\n
var i = 2019;\nvar s = i + '';\n<\/pre>\n
${}<\/code> \u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
var i = 2019;\nvar s = `${i}`;<\/pre>\n
\u6587\u5b57\u5217 \u21d2 \u6570\u5024<\/h3>\n
Number<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
var s = '2019';\nvar i = Number(s);\n<\/pre>\n
parseInt<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
var s = '2019';\nvar i = parseInt(s);\n\/\/ \u3082\u3057\u304f\u306f \nvar i = parseInt(s, 10);\n<\/pre>\n
var s = '2019';\nvar i = s - 0;\n\/\/ \u3082\u3057\u304f\u306f\nvar i = s * 1;\nvar i = s \/ 1;<\/pre>\n
Python<\/h2>\n
$ python --version\n3.6.8 (default, Oct 7 2019, 12:59:55) \n[GCC 8.3.0]<\/pre>\n
\u6570\u5024 \u21d2 \u6587\u5b57\u5217<\/h3>\n
str<\/code> \u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
i = 2019\ns = str(i)\n<\/pre>\n
\u6587\u5b57\u5217 \u21d2 \u6570\u5024<\/h3>\n
int<\/code> \u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
s = '2019'\ni = int(s)\n<\/pre>\n
unicodedata<\/code> \u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u95a2\u6570
unicodedata.numeric()<\/code> \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u4e00\u3001\u5341\u3001\u767e\u3001\u5343\u3068\u3044\u3063\u305f\u6f22\u6570\u5b57 1 \u3064\u306e\u6570\u5024\u3078\u306e\u5909\u63db\u304c\u53ef\u80fd\u3067\u3059\u3002\u3053\u308c\u306f\u30b7\u30d6\u3044\u3067\u3059\u306d\u3002<\/p>\n
import unicodedata\n\ns = '\u767e'\ni = unicodedata.numeric(s)\n<\/pre>\n
Java<\/h2>\n
$ java -version\njava version \"1.8.0_202\"\nJava(TM) SE Runtime Environment (build 1.8.0_202-b08)\nJava HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)<\/pre>\n
\u6570\u5024 \u21d2 \u6587\u5b57\u5217<\/h3>\n
String<\/code> \u30af\u30e9\u30b9\u306e
valueOf<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
int i = 2019;\nString s = String.valueOf(i);\n<\/pre>\n
int i = 2019;\nString s = \"\" + i;\n<\/pre>\n
Integer<\/code> \u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3057\u3066\u3001
toString()<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
int i = 2019;\nString s = new Integer(i).toString();\n<\/pre>\n
Integer<\/code> \u30af\u30e9\u30b9\u306e
toString<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
int i = 2019;\nString s = Integer.toString(i);\n<\/pre>\n
\u6587\u5b57\u5217 \u21d2 \u6570\u5024<\/h3>\n
Integer<\/code> \u30af\u30e9\u30b9\u306e
parseInt<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
String s = '2019';\nint i = Integer.parseInt(s);\n<\/pre>\n
Integer<\/code> \u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3057\u3066\u3001
intValue()<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
String s = '2019';\nint i = new Integer(s).intValue();\n<\/pre>\n
Integer<\/code> \u30af\u30e9\u30b9\u306e
valueOf<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
String s = '2019';\nint i = Integer.valueOf(s);\n<\/pre>\n
PHP<\/h2>\n
$ php -v\nPHP 7.2.26 (cli) (built: Dec 17 2019 14:06:22) ( NTS )\nCopyright (c) 1997-2018 The PHP Group\nZend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies<\/pre>\n
\u6570\u5024 \u21d2 \u6587\u5b57\u5217<\/h3>\n
strval<\/code> \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
$i = 2019;\n$s = strval($i);\n<\/pre>\n
sprintf<\/code> \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
$i = 2019;\n$s = sprintf(\"%d\",$i);\n<\/pre>\n
$i = 2019;\n$s = (string) $i;\n<\/pre>\n
\u6587\u5b57\u5217 \u21d2 \u6570\u5024<\/h3>\n
intval<\/code> \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
$str = \"2019\";\n$num10 = intval($str);\n<\/pre>\n
$str = \"2019\";\n$num = (int)$str;\n<\/pre>\n
C#<\/h2>\n
$ mcs --version\nMono C# compiler version 6.6.0.161<\/pre>\n
\u6570\u5024 \u21d2 \u6587\u5b57\u5217<\/h3>\n
ToString<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
int i = 2019;\nstring s = i.ToString();\n<\/pre>\n
Convert<\/code> \u30af\u30e9\u30b9\u306e
ToString<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002
Convert<\/code>\u30af\u30e9\u30b9\u3067\u5909\u63db\u3059\u308b\u5834\u5408\u306b\u306f\u3001
null<\/code>\u306e\u5909\u63db\u3092\u8a66\u307f\u3066\u3082\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u305b\u3093\u3002<\/p>\n
int i = 2019;\nstring s = Convert.ToString(i);\n<\/pre>\n
\u6587\u5b57\u5217 \u21d2 \u6570\u5024<\/h3>\n
int<\/code> \u30af\u30e9\u30b9\u306e
Parse<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
string s = \"2019\";\nint i = int.Parse(s);\n<\/pre>\n
Convert<\/code> \u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
string s = \"2019\";\nint i = Convert.ToInt32(s);\n<\/pre>\n
C++<\/h2>\n
$ g++ --version\ng++ (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39)\nCopyright (C) 2015 Free Software Foundation, Inc.\nThis is free software; see the source for copying conditions. There is NO\nwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.<\/pre>\n
\u6570\u5024 \u21d2 \u6587\u5b57\u5217<\/h3>\n
to_string<\/code> \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
int i = 2019\nstd::string s = std::to_string(i);\n<\/pre>\n
\u6587\u5b57\u5217 \u21d2 \u6570\u5024<\/h3>\n
stoi<\/code> \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
std::string s = \"2019\";\nint i = std::stoi(s);\n<\/pre>\n
TypeScript<\/h2>\n
Shell<\/h2>\n
$ bash --version\nGNU bash, \u30d0\u30fc\u30b8\u30e7\u30f3 4.2.46(2)-release (x86_64-redhat-linux-gnu)\nCopyright (C) 2011 Free Software Foundation, Inc.\n\u30e9\u30a4\u30bb\u30f3\u30b9 GPLv3+: GNU GPL \u30d0\u30fc\u30b8\u30e7\u30f3 3 \u307e\u305f\u306f\u305d\u308c\u4ee5\u964d <http:\/\/gnu.org\/licenses\/gpl.html>\n\nThis is free software; you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.\n<\/pre>\n
\u6587\u5b57\u5217\u3092\u6570\u5024\u3068\u3057\u3066\u8a08\u7b97<\/h3>\n
$()<\/code> \u3067\u56f2\u307f\u3001\u6570\u5024\u3068\u3057\u3066\u5c55\u958b\u3059\u308b\u5909\u6570\u306e\u76f4\u524d\u306b
expr<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u306e\u6642\u3001\u56db\u5247\u6f14\u7b97\u8a18\u53f7\u306e\u524d\u5f8c\u306b\u30b9\u30da\u30fc\u30b9\u304c\u5fc5\u8981\u3067\u3059\u3002\u203b\u639b\u3051\u7b97\u3084\u62ec\u5f27\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f
\\*<\/code> \u306e\u3088\u3046\u306b\u3001\u8a18\u53f7\u306e\u524d\u306b\u30d0\u30c3\u30af\u30b9\u30e9\u30c3\u30b7\u30e5\uff08Windows \u3067\u306f\u5186\u30de\u30fc\u30af\uff09\u3092\u8a18\u8ff0\u3057\u3066\u30a8\u30b9\u30b1\u30fc\u30d7\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
s=2019\ns=$(expr $s + 1) # \u6587\u5b57\u5217s\u306f\u8a08\u7b97\u6642\u306e\u307f\u4e00\u6642\u7684\u306b\u6570\u5024\u3068\u3057\u3066\u6271\u308f\u308c\u308b\n<\/pre>\n
C<\/h2>\n
$ gcc --version\ngcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39)\nCopyright (C) 2015 Free Software Foundation, Inc.\nThis is free software; see the source for copying conditions. There is NO\nwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.<\/pre>\n
\u6570\u5024 \u21d2 \u6587\u5b57\u5217<\/h3>\n
sprintf<\/code> \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
int i = 2019;\nchar s[256];\nsprintf(s,\"%d\",i);\n<\/pre>\n
\u6587\u5b57\u5217 \u21d2 \u6570\u5024<\/h3>\n
atoi<\/code> \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
char* s = \"2019\";\nint i = atoi(s);\n<\/pre>\n
atol<\/code>\u3001
atoll<\/code>\u3001
atof<\/code> \u3068\u3044\u3046\u95a2\u6570\u3082\u3042\u308a\u3001\u3053\u308c\u3089\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067 long \u578b\u3001long long \u578b\u3001float \u578b\u3078\u306e\u5909\u63db\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
Ruby<\/h2>\n
$ ruby --version\nruby 2.0.0p648 (2015-12-16) [x86_64-linux]<\/pre>\n
\u6570\u5024 \u21d2 \u6587\u5b57\u5217<\/h3>\n
to_s<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
i = 2019\ns = i.to_s\n<\/pre>\n
\u6587\u5b57\u5217 \u21d2 \u6570\u5024<\/h3>\n
to_i<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u4f8b\u3002<\/p>\n
s = \"2019\"\ni = s.to_i\n<\/pre>\n
\u304a\u308f\u308a\u306b<\/h1>\n
\u53c2\u7167<\/h1>\n
\n
\n
\u7d9a\u304d\u3092\u8aad\u3080...<\/a><\/p>\n","protected":false},"author":87,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[332,262,18],"tags":[141,79,57,53,120,24,28],"_links":{"self":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/25105"}],"collection":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/users\/87"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/comments?post=25105"}],"version-history":[{"count":74,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/25105\/revisions"}],"predecessor-version":[{"id":25418,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/25105\/revisions\/25418"}],"wp:attachment":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/media?parent=25105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/categories?post=25105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/tags?post=25105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}