“`” \u7b2c\u4e00\u79cd<\/p>\n
<hr><\/p>\n
atomic\u548cnonatomic\u533a\u522b\u7528\u6765\u51b3\u5b9a\u7f16\u8bd1\u5668\u751f\u6210\u7684getter\u548csetter\u662f\u5426\u4e3a\u539f\u5b50\u64cd\u4f5c\u3002atomic\u63d0\u4f9b\u591a\u7ebf\u7a0b\u5b89\u5168,\u662f\u63cf\u8ff0\u8be5\u53d8\u91cf\u662f\u5426\u652f\u6301\u591a\u7ebf\u7a0b\u7684\u540c\u6b65\u8bbf\u95ee\uff0c\u5982\u679c\u9009\u62e9\u4e86atomic \u90a3\u4e48\u5c31\u662f\u8bf4\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u7684\u521b\u5efalock\u9501\uff0c\u9501\u5b9a\u53d8\u91cf\u3002nonatomic\u7981\u6b62\u591a\u7ebf\u7a0b\uff0c\u53d8\u91cf\u4fdd\u62a4\uff0c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n
<blockquote>atomic\uff1a\u9ed8\u8ba4\u662f\u6709\u8be5\u5c5e\u6027\u7684\uff0c\u8fd9\u4e2a\u5c5e\u6027\u662f\u4e3a\u4e86\u4fdd\u8bc1\u7a0b\u5e8f\u5728\u591a\u7ebf\u7a0b\u60c5\u51b5\u4e0b\uff0c\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u751f\u6210\u4e00\u4e9b\u4e92\u65a5\u52a0\u9501\u4ee3\u7801\uff0c\u907f\u514d\u8be5\u53d8\u91cf\u7684\u8bfb\u5199\u4e0d\u540c\u6b65\u95ee\u9898\u3002
\n<\/blockquote><\/p>\n
<blockquote><p>nonatomic\uff1a\u5982\u679c\u8be5\u5bf9\u8c61\u65e0\u9700\u8003\u8651\u591a\u7ebf\u7a0b\u7684\u60c5\u51b5\uff0c\u8bf7\u52a0\u5165\u8fd9\u4e2a\u5c5e\u6027\uff0c\u8fd9\u6837\u4f1a\u8ba9\u7f16\u8bd1\u5668\u5c11\u751f\u6210\u4e00\u4e9b\u4e92\u65a5\u52a0\u9501\u4ee3\u7801\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6548\u7387\u3002
\n<\/blockquote><\/p>\n
<blockquote>atomic\u7684\u610f\u601d\u5c31\u662fsetter\/getter\u8fd9\u4e2a\u51fd\u6570\uff0c\u662f\u4e00\u4e2a\u539f\u8bed\u64cd\u4f5c\u3002\u5982\u679c\u6709\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8c03\u7528setter\u7684\u8bdd\uff0c\u4e0d\u4f1a\u51fa\u73b0\u67d0\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u5b8csetter\u5168\u90e8\u8bed\u53e5\u4e4b\u524d\uff0c\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u5f00\u59cb\u6267\u884csetter\u60c5\u51b5\uff0c\u76f8\u5f53\u4e8e\u51fd\u6570\u5934\u5c3e\u52a0\u4e86\u9501\u4e00\u6837\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002nonatomic\u4e0d\u4fdd\u8bc1setter\/getter\u7684\u539f\u8bed\u884c\uff0c\u6240\u4ee5\u4f60\u53ef\u80fd\u4f1a\u53d6\u5230\u4e0d\u5b8c\u6574\u7684\u4e1c\u897f\u3002\u56e0\u6b64\uff0c\u5728\u591a\u7ebf\u7a0b\u7684\u73af\u5883\u4e0b\u539f\u5b50\u64cd\u4f5c\u662f\u975e\u5e38\u5fc5\u8981\u7684\uff0c\u5426\u5219\u6709\u53ef\u80fd\u4f1a\u5f15\u8d77\u9519\u8bef\u7684\u7ed3\u679c\u3002
\n<\/blockquote><\/p>\n
\u6bd4\u5982setter\u51fd\u6570\u91cc\u9762\u6539\u53d8\u4e24\u4e2a\u6210\u5458\u53d8\u91cf\uff0c\u5982\u679c\u4f60\u7528nonatomic\u7684\u8bdd\uff0cgetter\u53ef\u80fd\u4f1a\u53d6\u5230\u53ea\u66f4\u6539\u4e86\u5176\u4e2d\u4e00\u4e2a\u53d8\u91cf\u65f6\u5019\u7684\u72b6\u6001\uff0c\u8fd9\u6837\u53d6\u5230\u7684\u4e1c\u897f\u4f1a\u6709\u95ee\u9898\uff0c\u5c31\u662f\u4e0d\u5b8c\u6574\u7684\u3002\u5f53\u7136\u5982\u679c\u4e0d\u9700\u8981\u591a\u7ebf\u7a0b\u652f\u6301\u7684\u8bdd\uff0c\u7528nonatomic\u5c31\u591f\u4e86\uff0c\u56e0\u4e3a\u4e0d\u6d89\u53ca\u5230\u7ebf\u7a0b\u9501\u7684\u64cd\u4f5c\uff0c\u6240\u4ee5\u5b83\u6267\u884c\u7387\u76f8\u5bf9\u5feb\u4e9b\u3002<\/p>\n
\u4e0b\u9762\u662f\u8f7d\u5f55\u7684\u7f51\u4e0a\u4e00\u6bb5\u52a0\u4e86atomic\u7684\u4f8b\u5b50\uff1a<\/p>\n
\u00a0<\/p>\n
<pre><code class=""language-csharp"" lang=""csharp""> {lock}
\n if (property != newValue) {
\n [property release];
\n property = [newValue retain];
\n }
\n {unlock}
\n<\/code><\/pre><\/p>\n
<blockquote>\u53ef\u4ee5\u770b\u51fa\u6765\uff0c\u7528atomic\u4f1a\u5728\u591a\u7ebf\u7a0b\u7684\u8bbe\u503c\u53d6\u503c\u65f6\u52a0\u9501\uff0c\u4e2d\u95f4\u7684\u6267\u884c\u5c42\u662f\u5904\u4e8e\u88ab\u4fdd\u62a4\u7684\u4e00\u79cd\u72b6\u6001\uff0catomic\u662foc\u4f7f\u7528\u7684\u4e00\u79cd\u7ebf\u7a0b\u4fdd\u62a4\u6280\u672f\uff0c\u57fa\u672c\u4e0a\u6765\u8bb2\uff0c\u5c31\u662f\u9632\u6b62\u5728\u5199\u5165\u672a\u5b8c\u6210\u7684\u65f6\u5019\u88ab\u53e6\u5916\u4e00\u4e2a\u7ebf\u7a0b\u8bfb\u53d6\uff0c\u9020\u6210\u6570\u636e\u9519\u8bef\u3002\u800c\u8fd9\u79cd\u673a\u5236\u662f\u8017\u8d39\u7cfb\u7edf\u8d44\u6e90\u7684\uff0c\u6240\u4ee5\u5728iPhone\u8fd9\u79cd\u5c0f\u578b\u8bbe\u5907\u4e0a\uff0c\u5982\u679c\u6ca1\u6709\u4f7f\u7528\u591a\u7ebf\u7a0b\u95f4\u7684\u901a\u8baf\u7f16\u7a0b\uff0c\u90a3\u4e48nonatomic\u662f\u4e00\u4e2a\u975e\u5e38\u597d\u7684\u9009\u62e9\u3002
\n<\/blockquote><\/p>\n
<hr><\/p>\n
\u7b2c\u4e8c\u79cd<\/p>\n
<hr><\/p>\n
atomic\u548cnonatomic\u7528\u6765\u51b3\u5b9a\u7f16\u8bd1\u5668\u751f\u6210\u7684getter\u548csetter\u662f\u5426\u4e3a\u539f\u5b50\u64cd\u4f5c\u3002<\/p>\n
<h4>atomic<\/h4><\/p>\n
\u8bbe\u7f6e\u6210\u5458\u53d8\u91cf\u7684@property\u5c5e\u6027\u65f6\uff0c\u9ed8\u8ba4\u4e3aatomic\uff0c\u63d0\u4f9b\u591a\u7ebf\u7a0b\u5b89\u5168\u3002<\/p>\n
\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\uff0c\u539f\u5b50\u64cd\u4f5c\u662f\u5fc5\u8981\u7684\uff0c\u5426\u5219\u6709\u53ef\u80fd\u5f15\u8d77\u9519\u8bef\u7684\u7ed3\u679c\u3002\u52a0\u4e86atomic\uff0csetter\u51fd\u6570\u4f1a\u53d8\u6210\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n
\u00a0<\/p>\n
<pre><code class=""language-csharp"" lang=""csharp""> {lock}
\n if (property != newValue) {
\n [property release];
\n property = [newValue retain];
\n }
\n {unlock}
\n<\/code><\/pre><\/p>\n
<h4>nonatomic<\/h4><\/p>\n
3\u7981\u6b62\u591a\u7ebf\u7a0b\uff0c\u53d8\u91cf\u4fdd\u62a4\uff0c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n
3atomic\u662fObjc\u4f7f\u7528\u7684\u4e00\u79cd\u7ebf\u7a0b\u4fdd\u62a4\u6280\u672f\uff0c\u57fa\u672c\u4e0a\u6765\u8bb2\uff0c\u662f\u9632\u6b62\u5728\u5199\u672a\u5b8c\u6210\u7684\u65f6\u5019\u88ab\u53e6\u5916\u4e00\u4e2a\u7ebf\u7a0b\u8bfb\u53d6\uff0c\u9020\u6210\u6570\u636e\u9519\u8bef\u3002\u800c\u8fd9\u79cd\u673a\u5236\u662f\u8017\u8d39\u7cfb\u7edf\u8d44\u6e90\u7684\uff0c\u6240\u4ee5\u5728iPhone\u8fd9\u79cd\u5c0f\u578b\u8bbe\u5907\u4e0a\uff0c\u5982\u679c\u6ca1\u6709\u4f7f\u7528\u591a\u7ebf\u7a0b\u95f4\u7684\u901a\u8baf\u7f16\u7a0b\uff0c\u90a3\u4e48nonatomic\u662f\u4e00\u4e2a\u975e\u5e38\u597d\u7684\u9009\u62e9\u3002<\/p>\n
3\u6307\u51fa\u8bbf\u95ee\u5668\u4e0d\u662f\u539f\u5b50\u64cd\u4f5c\uff0c\u800c\u9ed8\u8ba4\u5730\uff0c\u8bbf\u95ee\u5668\u662f\u539f\u5b50\u64cd\u4f5c\u3002\u8fd9\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\uff0c\u89e3\u6790\u7684\u8bbf\u95ee\u5668\u63d0\u4f9b\u4e00\u4e2a\u5bf9\u5c5e\u6027\u7684\u5b89\u5168\u8bbf\u95ee\uff0c\u4ece\u83b7\u53d6\u5668\u5f97\u5230\u7684\u8fd4\u56de\u503c\u6216\u8005\u901a\u8fc7\u8bbe\u7f6e\u5668\u8bbe\u7f6e\u7684\u503c\u53ef\u4ee5\u4e00\u6b21\u5b8c\u6210\uff0c\u5373\u4fbf\u662f\u522b\u7684\u7ebf\u7a0b\u4e5f\u6b63\u5728\u5bf9\u5176\u8fdb\u884c\u8bbf\u95ee\u3002\u5982\u679c\u4f60\u4e0d\u6307\u5b9a nonatomic \uff0c\u5728\u81ea\u5df1\u7ba1\u7406\u5185\u5b58\u7684\u73af\u5883\u4e2d\uff0c\u89e3\u6790\u7684\u8bbf\u95ee\u5668\u4fdd\u7559\u5e76\u81ea\u52a8\u91ca\u653e\u8fd4\u56de\u7684\u503c\uff0c\u5982\u679c\u6307\u5b9a\u4e86 nonatomic \uff0c\u90a3\u4e48\u8bbf\u95ee\u5668\u53ea\u662f\u7b80\u5355\u5730\u8fd4\u56de\u8fd9\u4e2a\u503c\u3002 <\/p>\n
\u00a0<\/p>\n
<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
“`” \u7b2c\u4e00\u79cd <hr> atomic\u548cnonatomic\u533a\u522b\u7528\u6765\u51b3\u5b9a\u7f16\u8bd1 […]<\/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-42403","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42403","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=42403"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42403\/revisions"}],"predecessor-version":[{"id":42404,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/42403\/revisions\/42404"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=42403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=42403"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=42403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}