{"id":2779,"date":"2024-10-07T11:15:07","date_gmt":"2024-10-07T03:15:07","guid":{"rendered":"https:\/\/wp.minicoda.com\/?p=2779"},"modified":"2025-01-18T17:05:37","modified_gmt":"2025-01-18T09:05:37","slug":"%e5%85%b6%e5%ae%83%e7%b1%bb%e5%9e%8b%e8%bd%ac%e6%8d%a2%e6%88%90%e6%95%b0%e5%80%bc%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/wp.minicoda.com\/index.php\/%e5%85%b6%e5%ae%83%e7%b1%bb%e5%9e%8b%e8%bd%ac%e6%8d%a2%e6%88%90%e6%95%b0%e5%80%bc%e7%b1%bb%e5%9e%8b\/","title":{"rendered":"\u5176\u5b83\u7c7b\u578b\u8f6c\u6362\u6210\u6570\u503c\u7c7b\u578b"},"content":{"rendered":"\n<p>  \u5f88\u591a\u9759\u6001\u7c7b\u578b\u7f16\u7a0b\u8bed\u8a00\uff0c\u4e0d\u5141\u8bb8\u5c06\u975e\u6570\u503c\u7c7b\u578b\u8f6c\u6362\u6210\u6570\u503c\u7c7b\u578b\uff0c\u4e00\u4e9b\u811a\u672c\u8bed\u8a00\u4e3a\u4e86\u7b80\u5316\u590d\u6742\u5ea6\uff0c\u5141\u8bb8\u975e\u6570\u503c\u7c7b\u578b\u6309\u7167\u7279\u5b9a\u89c4\u5219\u8f6c\u6362\u6210\u6570\u503c\u7c7b\u578b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JS  \n\n\n\n\n<ul class=\"wp-block-list\">\n<li>Undefined\u7c7b\u578b --&gt; NaN.<\/li>\n\n\n\n<li>Null\u7c7b\u578b --&gt; 0.<\/li>\n\n\n\n<li>Boolean\u7c7b\u578b true --&gt; 1, false --&gt; 0.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>String\u7c7b\u578b\u6839\u636e\u662f\u5341\u8fdb\u5236\u8fd8\u662f\u5341\u516d\u8fdb\u5236\u6216\u8005\u6d6e\u70b9\u6570\uff0c\u8f6c\u6362\u6210\u5bf9\u5e94\u6570\u503c\u3002\u6ce8\u610f\uff0c\u8fd9\u91cc\u6ca1\u6709\u516b\u8fdb\u5236\u6570\u503c\uff0c\u5b57\u7b26\u4e32\"012\"\u8f6c\u6362\u6210\u6570\u503c\u662f\u5341\u8fdb\u5236\u768412\uff0c\u800c\u4e0d\u662f\u516b\u8fdb\u5236\u7684012.<br>\u5982\u679c\u662f\u7a7a\u5b57\u7b26\u4e32\u6216\u8005\u591a\u4e2a\u7a7a\u683c\uff0c\u6570\u503c\u662f0\uff0c\u5982\u679c\u662f\u9664\u4e86\u5982\u4e0a\u7684\u5176\u4ed6\u5b57\u7b26\u4e32\uff0c\u5373\u662f\u975e\u6cd5\u6570\u503c\uff0c\u8f6c\u6362\u7ed3\u679c\u662fNaN.<\/li>\n\n\n\n<li>Object\u7c7b\u578b\u8f6c\u6362\u4e3a\u6570\u503c\u7ecf\u8fc72\u4e2a\u6b65\u9aa4\uff0c\u5148\u8c03\u7528valueOf()\u51fd\u6570\uff0c\u6309\u7167\u5982\u4e0a\u89c4\u5219\uff0c\u6709\u5408\u6cd5\u6570\u503c\u5373\u8fd4\u56de\uff0c\u5982\u679c\u8fd4\u56deNaN, \u7ee7\u7eed\u8c03\u7528toString()\u51fd\u6570\uff0c\u540c\u6837\u6309\u7167\u5982\u4e0a\u89c4\u5219\u5f97\u5230\u6570\u503c\uff0c\u5982\u679c\u6ca1\u6709\u6570\u503c\u7c7b\u578b\u8fd4\u56de\uff0c\u8fd4\u56deNaN.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>C#\n<ul class=\"wp-block-list\">\n<li>\u57fa\u672c\u7c7b\u578b\u63d0\u4f9b\u9690\u5f0f\u8f6c\u6362\u6216\u8005\u5f3a\u5236\u8f6c\u6362\u3002<\/li>\n\n\n\n<li>\u5b57\u7b26\u4e32\u8f6c\u6362\u6210\u57fa\u672c\u7c7b\u578b\uff1a\n<ul class=\"wp-block-list\">\n<li><em style=\"font-weight: bold;\">&lt;Type&gt;<\/em>.Parse(<strong><em>&lt;String&gt;<\/em><\/strong>)<br>\u4f8b\u5982int.Parse(\"123\")<\/li>\n\n\n\n<li><em style=\"font-weight: bold;\">&lt;Type&gt;<\/em>.TryParse(<strong><em>&lt;String&gt;<\/em><\/strong>, out <strong><em>&lt;Val&gt;<\/em><\/strong>)  \uff08C# 2.0 ?\uff09<br>\u548cParse\u7684\u533a\u522b\u662f\uff0c\u6b64\u51fd\u6570\u8f6c\u6362\u5931\u8d25\u4e0d\u4f1a\u629b\u51fa\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5b57\u7b26\u4e32\u8f6c\u6362\u6210\u57fa\u672c\u7c7b\u578b\uff1a\n<ul class=\"wp-block-list\">\n<li>System.Convert.To<strong><em>XXX<\/em><\/strong>(<strong><em>&lt;String&gt;<\/em><\/strong>)<br>\u4f8b\u5982ToInt, ToFloat, ...<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>VB\n<ul class=\"wp-block-list\">\n<li>Val(str) \u5c06str\u8f6c\u6362\u6210\u6570\u503c\uff0c\u5982\u679cstr\u5305\u542b\u4e0d\u80fd\u8f6c\u6362\u4e3a\u6570\u503c\u7684\u5b57\u7b26\uff0c\u8f6c\u6362\u5c31\u6b64\u7ec8\u6b62\uff0c\u8fd4\u56de\u5df2\u89e3\u6790\u7684\u6570\u503c\u3002\u4f8b\u5982\uff1a<br>Val(\"a12\") \u8fd4\u56de 0\uff0cVal(\"-123ab\") \u8fd4\u56de -123.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f6c\u6362\u6210\u6570\u503c\u7684API<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JS<br>Number\u51fd\u6570\u7528\u4e8e\u5c06\u4efb\u4f55\u7c7b\u578b\u8f6c\u6362\u6210\u6570\u503c\u3002<br>parseInt\u51fd\u6570\u548cparseFloat\u51fd\u6570\u90fd\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u503c\u3002\u8981\u7279\u522b\u6ce8\u610f\uff0c\u4f20\u5165\u5b57\u7b26\u4e32\u548c\u6570\u503c\u7c7b\u578b\u5c06\u5bfc\u81f4\u7ed3\u679c\u4e0d\u540c\uff0c\u6570\u503c\u7c7b\u578b\u7684\u53c2\u6570\u4f1a\u5148\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u518d\u53c2\u4e0e\u8f6c\u6362\u3002\u4f8b\u5982parseInt(0x10, 16)\u548cparseInt('0x10', 16)\u7ed3\u679c\u5206\u522b\u662f22\u548c16.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5f88\u591a\u9759\u6001\u7c7b\u578b\u7f16\u7a0b\u8bed\u8a00\uff0c\u4e0d\u5141\u8bb8\u5c06\u975e\u6570\u503c\u7c7b\u578b\u8f6c\u6362\u6210\u6570\u503c\u7c7b\u578b\uff0c\u4e00\u4e9b\u811a\u672c\u8bed\u8a00\u4e3a\u4e86\u7b80\u5316\u590d\u6742\u5ea6\uff0c\u5141\u8bb8\u975e\u6570\u503c\u7c7b\u578b\u6309\u7167\u7279\u5b9a\u89c4\u5219\u8f6c\u6362\u6210\u6570\u503c\u7c7b\u578b\u3002 \u8f6c\u6362\u6210\u6570\u503c\u7684API<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[299],"tags":[],"class_list":["post-2779","post","type-post","status-publish","format-standard","hentry","category-think"],"views":60,"_links":{"self":[{"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/posts\/2779","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/comments?post=2779"}],"version-history":[{"count":10,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/posts\/2779\/revisions"}],"predecessor-version":[{"id":3603,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/posts\/2779\/revisions\/3603"}],"wp:attachment":[{"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/media?parent=2779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/categories?post=2779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.minicoda.com\/index.php\/wp-json\/wp\/v2\/tags?post=2779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}