大约有 5,700 项符合查询结果（耗时：0.0125秒） [XML]
Is object empty? [duplicate]
...ption to use!
Object.keys(obj).length is 10 times slower for empty objects
JSON.stringify(obj).length is always the slowest (not surprising)
Object.getOwnPropertyNames(obj).length takes longer than Object.keys(obj).length can be much longer on some systems.
Bottom line performance wise, use:
func...
阿里的线下野心 - 资讯 - 清泛网 - 专注C/C++及内核技术
...。支付宝联合全国2万家线下门店进行打折促销，消费者使用手机支付宝支付最高可优惠50元。
从屌丝到有产阶层
征战线上多年，阿里树立了龙头地位，但线下的巨大市场体量仍然让阿里难以淡定。阿里的线下“野心”已是路...
PHP cURL custom headers
... exit();
}
// Show me the result
curl_close($ch);
$json= json_decode($season_data, true);
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站长投放广告绝对不做的事:Google Adsense和百度联盟广告违规分析 - 更多技...
...
2、“版权材料”就是指在未经版权所有者授权的情况下使用的材料，包括电影，电视剧，电视节目，音乐和歌曲（mp3，铃声，flash），漫画，书籍，软件等。特别要注意了：网站上的版权声明（例如“本站所有内容均搜集与网...
Debug Error \"pure virtual function call\" 原因解析 - 更多技术 - 清泛...
...常而未完全销毁，从而遗留下一个"次品"对象，程序继续使用此次品对象而调用到纯虚函数：
class Base
{
public:
~Base(){throw 0;} // . . . a)
virtual void virtualFunc() = 0;
};
class Derived: public Base
{
public:
virtual void virtualFunc(){}
};
Ba...
新手程序员应该知道的7件事 - 创意 - 清泛网 - 专注C/C++及内核技术
...及它是如何减轻了时间的初始成本。 “一定要掌握如何使用调试器！”他告诉我， “磨刀不误砍柴工，事先不妨花个一两天时间进行配置。如果没有得到预期结果，那就调试：设置断点，逐步调试代码，特别要注意第三方代码...
Ajax using https on an http page
...
Try JSONP.
most JS libraries make it just as easy as other AJAX calls, but internally use an iframe to do the query.
if you're not using JSON for your payload, then you'll have to roll your own mechanism around the iframe.
per...
写出高质量代码的10个Tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...直观了解。
建议最好与持续集成(CI)，代码审查环境配套使用， 每次提交的代码都能自动验证是否通过了工具的代码检查，通过才允许提交。
8. 单元测试
Android单元测试，一直备受争议，主要还是原生的测试框架不够方便，每...
What exactly is Apache Camel?
...s from different sources to different destinations. For example: JMS -> JSON, HTTP -> JMS or funneling FTP -> JMS, HTTP -> JMS, JSON -> JMS
Wikipedia says:
Apache Camel is a rule-based routing and mediation engine which provides a Java object based implementation of the Enterpri...
Should I declare Jackson's ObjectMapper as a static field?
...d an application with 4 identical threads that were getting and processing JSON data from web services.
My application was frequently stalling on the following command, according to the thread dump:
Map aPage = mapper.readValue(reader, Map.class);
Beside that, performance was not good.
When I rep...