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==推荐这样写：==
==不推荐这样写：==
==推荐：==
==不推荐：==
if (object == nil)容易误写成赋值语句,if (!object)写法很简洁
if (object == nil)
if (!object)
可以如下这样写：
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最后发贴： 2024-10-21 23:09
一个高大上的名字
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课课家运营团队
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起个名字你猜我叫啥
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一路风景都看透
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论坛站务软件水平考试华为认证计算机等级PMP认证思科认证Photoshop3DMAX编程语言移动开发系统运维产品运营淘宝营销办公软件Ps修图云计算大数据摄影就业
<h1 style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 26px; font-stretch: normal; line-height: 40px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);"> 编码规范</h1><h2 style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 24px; font-stretch: normal; line-height: 36px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);"> 1、if语句</h2><h3 style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-stretch: normal; line-height: 30px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);"> ①、须列出所有分支（穷举所有的情况），而且每个分支都须给出明确的结果。</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"> ==推荐这样写：==</p><p><img src="/Public/forum/ueditor/image/20171016/1508121717842707.png" title="1508121717842707.png" alt="image.png"/></p><p> <span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">==不推荐这样写：==</span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"> <img src="/Public/forum/ueditor/image/20171016/1508121740805651.png" title="1508121740805651.png" alt="image.png"/></span></p><p><br/></p><h3 style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-stretch: normal; line-height: 30px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);"> ②、不要使用过多的分支，要善于使用return来提前返回错误的情况，把最正确的情况放到最后返回。</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"> ==推荐这样写：==</p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508121789165479.png" title="1508121789165479.png" alt="image.png"/></span><br/></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"> <span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">==不推荐这样写：==</span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508121810728578.png" title="1508121810728578.png" alt="image.png"/></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><br/></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"></span></span></p><h3 style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-stretch: normal; line-height: 30px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);"> ③、条件过多，过长的时候应该换行。条件表达式如果很长，则需要将他们提取出来赋给一个BOOL值，或者抽取出一个方法</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"> ==推荐这样写：==</p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508121831784762.png" title="1508121831784762.png" alt="image.png"/></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508121955567418.png" title="1508121955567418.png" alt="image.png"/></span></span><br/></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508121963986929.png" title="1508121963986929.png" alt="image.png"/></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"> ==不推荐这样写：==</span></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508122014905781.png" title="1508122014905781.png" alt="image.png"/></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><br/></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"></span></span></p><h3 style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-stretch: normal; line-height: 30px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);"> ④、条件语句的判断应该是变量在右，常量在左。</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"> ==推荐：==</p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"> <img src="/Public/forum/ueditor/image/20171016/1508122208948764.png" title="1508122208948764.png" alt="image.png"/></span></span><br/></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"> <span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">==不推荐：==</span></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"> <img src="/Public/forum/ueditor/image/20171016/1508122299764587.png" title="1508122299764587.png" alt="image.png"/></span></span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"></span></span></span></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace;"> if (object == nil)</code>容易误写成赋值语句,<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace;">if (!object)</code>写法很简洁</p><h3 style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-stretch: normal; line-height: 30px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);"> ⑤、每个分支的实现代码都须被大括号包围</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"> ==推荐：==</p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508122325834616.png" title="1508122325834616.png" alt="image.png"/></span></span></span></p><p> <span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">==不推荐：==</span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508122338927779.png" title="1508122338927779.png" alt="image.png"/></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"> 可以如下这样写：</span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171016/1508122397463355.png" title="1508122397463355.png" alt="image.png"/></span></span></p>
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