{"description":"\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 UITextField \u306e text \u306b\u8a2d\u5b9a\u3057\u3088\u3046\u3068\u3057\u305f\u3089 'NSInvalidArgumentException', reason: '-[NSNull length]: unrecognized selector sent to instance 0x2264678'\u3063\u3066\u3044\u3046\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u30a2\u30d7\u30ea\u304c\u843d\u3061\u305f\u3002nil \u304c\u5165\u3063\u3066\u3044\u308b\u306a\u3089\u4f8b\u5916\u306f\u51fa\u306a\u3044\u306f\u305a\u306a\u306e\u306b\u3001\u3063\u3066\u601d\u3063\u305f\u3051\u3069\u3088\u304f\u898b\u305f\u3089 nil \u3058\u3083\u306a\u304f\u3066 NSNull \u3060\u3063\u305f\u3002NSNull \u306f nil \u3068\u306f\u5225\u7269\u3067\u3001NSNull \u306f nil \u3068\u540c\u3058\u3088\u3046\u306b\u306f\u632f\u308b\u821e\u3063\u3066\u304f\u308c\u306a\u3044\u3002 if (![comment.content \u2026","categories":["Objective-C","iOS"],"width":"100%","author_url":"https://blog.hatena.ne.jp/griefworker/","height":"190","provider_url":"https://hatena.blog","type":"rich","version":"1.0","provider_name":"Hatena Blog","published":"2012-11-23 21:33:38","url":"https://tnakamura.hatenablog.com/entry/2012/11/23/213338","author_name":"griefworker","blog_title":"present","image_url":null,"title":"NSString \u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b NSNull \u304c\u5165\u3063\u3066\u3044\u3066\u30cf\u30de\u3063\u305f","blog_url":"https://tnakamura.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftnakamura.hatenablog.com%2Fentry%2F2012%2F11%2F23%2F213338\" title=\"NSString \u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b NSNull \u304c\u5165\u3063\u3066\u3044\u3066\u30cf\u30de\u3063\u305f - present\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}