{"id":624,"date":"2021-09-17T15:22:17","date_gmt":"1970-01-01T00:00:00","guid":{"rendered":"http:\/\/swift.tecc0.com\/?p=624"},"modified":"2021-09-17T15:22:17","modified_gmt":"1970-01-01T00:00:00","slug":"post-624","status":"publish","type":"post","link":"https:\/\/swift.tecc0.com\/?p=624","title":{"rendered":"Swift\u3067\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0(Optional Binding)\u3092\u4f7f\u3063\u3066\u5b89\u5168\u306b\u30a2\u30f3\u30e9\u30c3\u30d7\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p><span style=\"color: #ff0000;\">!<\/span> \u3092\u4f7f\u3046\u3053\u3068\u3067\u30a2\u30f3\u30e9\u30c3\u30d7\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3051\u3069\u3001\u5024\u304cnil\u3060\u3063\u305f\u5834\u5408\u306f\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3088\u3002<\/p>\n<p>\u305d\u3093\u306a\u3068\u304d\u306b\u3001\u00a0<strong>\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0(Optional Binding)<\/strong> \u3092\u4f7f\u3046\u3053\u3068\u3067\u5b89\u5168\u306b\u30a2\u30f3\u30e9\u30c3\u30d7\u3067\u304d\u308b\u3088\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>Swift\u3067\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0(Optional Binding)\u3092\u4f7f\u3063\u3066\u5b89\u5168\u306b\u30a2\u30f3\u30e9\u30c3\u30d7\u3059\u308b<\/h3>\n<pre class=\"lang:swift decode:true \">let hoge:String?\r\nhoge = \"Swift\"\r\nif let fuga = hoge {\r\n    print(fuga) \/\/ \"Swift\"\r\n} else {\r\n    print(\"nil\u3060\u3088\")\r\n}\r\n\r\nlet hoge2:String?\r\nhoge2 = nil\r\nif let fuga2 = hoge2 {\r\n    print(fuga2)\r\n} else {\r\n    print(\"nil\u3060\u3088\") \/\/ nil\u3060\u3088\r\n}<\/pre>\n<p>&nbsp;<\/p>\n<p>\u3053\u3093\u306a\u611f\u3058\u3067\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u30d0\u30ea\u30e5\u30fc\u304cnil\u3067\u306a\u3051\u308c\u3070\u3001\u4e00\u6642\u5909\u6570(\u3053\u3053\u3067\u306ffuga)\u306b\u4ee3\u5165\u3055\u308c\u3066\u3001nil\u306e\u3068\u304d\u306b\u306ffalse\u304c\u8fd4\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u308b\u3088\u3002<\/p>\n<p>\u3053\u308c\u306f<a href=\"https:\/\/swift.tecc0.com\/?p=375\"><strong>guard\u6587<\/strong><\/a>\u3067\u3082\u3082\u3061\u308d\u3093\u4f7f\u3048\u308b\u3088\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>! \u3092\u4f7f\u3046\u3053\u3068\u3067\u30a2\u30f3\u30e9\u30c3\u30d7\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3051\u3069\u3001\u5024\u304cnil\u3060\u3063\u305f\u5834\u5408\u306f\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3088\u3002 \u305d\u3093\u306a\u3068\u304d\u306b\u3001\u00a0\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0(Optional Binding) \u3092\u4f7f\u3046\u3053\u3068\u3067\u5b89\u5168\u306b\u30a2\u30f3\u30e9\u30c3\u30d7\u3067\u304d\u308b\u3088\u3002 &nbsp;&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/posts\/624"}],"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=624"}],"version-history":[{"count":2,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/posts\/624\/revisions"}],"predecessor-version":[{"id":626,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=\/wp\/v2\/posts\/624\/revisions\/626"}],"wp:attachment":[{"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swift.tecc0.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}