{"id":170,"date":"2021-09-17T15:23:32","date_gmt":"1970-01-01T00:00:00","guid":{"rendered":"http:\/\/swift.tecc0.com\/?p=170"},"modified":"2021-09-17T15:23:32","modified_gmt":"1970-01-01T00:00:00","slug":"post-170","status":"publish","type":"post","link":"https:\/\/swift.tecc0.com\/?p=170","title":{"rendered":"\u6587\u5b57\u5217\u3068\u6570\u5024\u306e\u578b\u5909\u63db\u30fb\u30ad\u30e3\u30b9\u30c8(cast)\u3059\u308b\u65b9\u6cd5 [Swift2.2]"},"content":{"rendered":"<p>\u4e00\u5fdc\u3001\u6574\u6570\u3068\u5c11\u6570\u306e\u6642\u306b\u5206\u3051\u3066\u66f8\u3044\u3066\u304a\u304f\u3051\u3069\u3001\u57fa\u672c\u7684\u306b\u540c\u3058\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u6574\u6570(Int)\u306e\u5834\u5408<\/h2>\n<h3>\u6570\u5024(Int) -&gt; \u6587\u5b57\u5217(String)\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/h3>\n<pre class=\"toolbar-overlay:false lang:swift decode:true\">let str = \"27\"\r\nprint(Int(str)) \/\/ Optional(27)\r\nprint(Int(str)!) \/\/ 27<\/pre>\n<p>&nbsp;<\/p>\n<h3>\u6587\u5b57\u5217(String)\u00a0-&gt; \u6570\u5024(Int)\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/h3>\n<pre class=\"toolbar-overlay:false lang:swift decode:true\">let num = 27\r\nprint(String(num)) \/\/ \"27\"\r\n\/\/ \u3082\u3057\u304f\u306f\r\nprint(num.description) \/\/ \"27\"<\/pre>\n<p><span style=\"color: #ff0000;\">\u203b\u4ee5\u524d\u306e <strong>toInt()<\/strong>\u306f\u4f7f\u308f\u306a\u304f\u306a\u3063\u3066\u308b\u306e\u3067\u6ce8\u610f\u3002<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2>\u5c11\u6570(Float, Double)\u306e\u5834\u5408<\/h2>\n<h3>\u5c11\u6570\u5024(Double) -&gt; \u6587\u5b57\u5217(String)\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/h3>\n<pre class=\"toolbar-overlay:false lang:swift decode:true\">let str = \"-2.7\"\r\nprint(Double(str)) \/\/ Optional(-2.700000...)\r\nprint(Double(str)!) \/\/ -2.7<\/pre>\n<p>&nbsp;<\/p>\n<h3>\u6587\u5b57\u5217(String)\u00a0-&gt;\u00a0\u5c11\u6570\u5024(Double)\u3078\u306e\u30ad\u30e3\u30b9\u30c8<\/h3>\n<pre class=\"toolbar-overlay:false lang:swift decode:true\">let num = -2.7\r\nprint(String(num)) \/\/ \"-2.7\"\r\n\/\/ \u3082\u3057\u304f\u306f\r\nprint(num.description) \/\/ \"-2.7\"<\/pre>\n<p>&nbsp;<\/p>\n<p>Swift2.0\u304b\u3089\u3060\u3051\u3069Swift2.2\u3067\u3082\u3053\u308c\u3060\u3088\uff01<\/p>\n<p>\u3042\u3068Optional\u306b\u3064\u3044\u3066\u306f\u4eca\u56de\u306f\u30b9\u30eb\u30fc\u3059\u308b\u3088\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u5fdc\u3001\u6574\u6570\u3068\u5c11\u6570\u306e\u6642\u306b\u5206\u3051\u3066\u66f8\u3044\u3066\u304a\u304f\u3051\u3069\u3001\u57fa\u672c\u7684\u306b\u540c\u3058\u3002 &nbsp; \u6574\u6570(Int)\u306e\u5834\u5408 \u6570\u5024(Int) -&gt; \u6587\u5b57\u5217(String)\u3078\u306e\u30ad\u30e3\u30b9\u30c8 let str = &#8220;27&#8221; print(Int(str))&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[12],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/posts\/170"}],"collection":[{"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=170"}],"version-history":[{"count":3,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/posts\/170\/revisions"}],"predecessor-version":[{"id":319,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/posts\/170\/revisions\/319"}],"wp:attachment":[{"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}