{"id":42475,"date":"2023-12-11T14:56:41","date_gmt":"2023-12-11T06:56:41","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=42475"},"modified":"2023-12-11T14:56:41","modified_gmt":"2023-12-11T06:56:41","slug":"%e4%bb%80%e4%b9%88%e6%98%afkvc%e5%92%8ckvo%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e4%bb%80%e4%b9%88%e6%98%afkvc%e5%92%8ckvo%ef%bc%9f\/","title":{"rendered":"\u4ec0\u4e48\u662fKVC\u548cKVO\uff1f"},"content":{"rendered":"<pre><code class=\" line-numbers\"><br \/>  \u7b54\uff1aKVC(Key-Value-Coding)\u5185\u90e8\u7684\u5b9e\u73b0\uff1a\u4e00\u4e2a\u5bf9\u8c61\u5728\u8c03\u7528setValue\u7684\u65f6\u5019\uff0c\uff081\uff09\u9996\u5148\u6839\u636e\u65b9\u6cd5\u540d\u627e\u5230\u8fd0\u884c\u65b9\u6cd5\u7684\u65f6\u5019\u6240\u9700\u8981\u7684\u73af\u5883\u53c2\u6570\u3002\uff082\uff09\u4ed6\u4f1a\u4ece\u81ea\u5df1isa\u6307\u9488\u7ed3\u5408\u73af\u5883\u53c2\u6570\uff0c\u627e\u5230\u5177\u4f53\u7684\u65b9\u6cd5\u5b9e\u73b0\u7684\u63a5\u53e3\u3002\uff083\uff09\u518d\u76f4\u63a5\u67e5\u627e\u5f97\u6765\u7684\u5177\u4f53\u7684\u65b9\u6cd5\u5b9e\u73b0\u3002KVO\uff08Key-Value-  Observing\uff09\uff1a\u5f53\u89c2\u5bdf\u8005\u4e3a\u4e00\u4e2a\u5bf9\u8c61\u7684\u5c5e\u6027\u8fdb\u884c\u4e86\u6ce8\u518c\uff0c\u88ab\u89c2\u5bdf\u5bf9\u8c61\u7684isa\u6307\u9488\u88ab\u4fee\u6539\u7684\u65f6\u5019\uff0cisa\u6307\u9488\u5c31\u4f1a\u6307\u5411\u4e00\u4e2a\u4e2d\u95f4\u7c7b\uff0c\u800c\u4e0d\u662f\u771f\u5b9e\u7684\u7c7b\u3002\u6240\u4ee5 isa\u6307\u9488\u5176\u5b9e\u4e0d\u9700\u8981\u6307\u5411\u5b9e\u4f8b\u5bf9\u8c61\u771f\u5b9e\u7684\u7c7b\u3002\u6240\u4ee5\u6211\u4eec\u7684\u7a0b\u5e8f\u6700\u597d\u4e0d\u8981\u4f9d\u8d56\u4e8eisa\u6307\u9488\u3002\u5728\u8c03\u7528\u7c7b\u7684\u65b9\u6cd5\u7684\u65f6\u5019\uff0c\u6700\u597d\u8981\u660e\u786e\u5bf9\u8c61\u5b9e\u4f8b\u7684\u7c7b\u540d \n\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7b54\uff1aKVC(Key-Value-Coding)\u5185\u90e8\u7684\u5b9e\u73b0\uff1a\u4e00\u4e2a\u5bf9\u8c61\u5728\u8c03\u7528setValue\u7684\u65f6\u5019\uff0c\uff081\uff09\u9996\u5148\u6839\u636e [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-42475","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=42475"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42475\/revisions"}],"predecessor-version":[{"id":42476,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42475\/revisions\/42476"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=42475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=42475"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=42475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}