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快速理解 高频对冲套利自动交易(程式化交易) - 更多技术 - 清泛网 - 专注...

...的都是浮亏的。直到浮亏变盈。) 你的理解大体上没有问题。与以往单向投机的区别是:我并非在某个价位上有多笔持仓浮亏,而是,每一个持仓浮亏单,均是不同价格,且由于是对冲套利持仓,不担心绝对价格的暴涨暴跌,...
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Can I use a hash sign (#) for commenting in PHP?

I have never, ever, seen a PHP file using hashes ( # ) for commenting. But today I realized that I actually can! I'm assuming there's a reason why everybody uses // instead though, so here I am. ...
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PHP UML Generator [closed]

How do I generate UML diagram based on existing classes in PHP? 11 Answers 11 ...
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relative path in require_once doesn't work

... this should fix your problem. So: require_once(__DIR__.'/../class/user.php'); This will prevent cases where you can run a PHP script from a different folder and therefore the relatives paths will not work. Edit: slash problem fixed ...
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Problems with lib-icu dependency when installing Symfony 2.3.x via Composer

... update your php-intl extension, that's where the icu error comes from! sudo aptitude install php5-intl // i.e. ubuntu brew install icu4c // osx check the extension is enabled and properly c...
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Where does PHP store the error log? (php5, apache, fastcgi, cpanel)

I am on shared hosting and have Cpanel, Apache, PHP is run by fastcgi. Where does PHP store the error log? 21 Answers ...
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蜘蛛的故事 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术

...下来,问这只蜘蛛:“你我相见总算是有缘,我来问你个问题,看你修炼了这一千多年来,有什么真知拙见。怎么样?”蜘蛛遇见佛主很是高兴,连忙答应了。佛主问到:“世间什么才是最珍贵的?”蜘蛛想了想,回答到:“世...
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解决:无法通过windows installer服务安装此安装程序包。您必须安装带有更...

...必须安装带有更新版本windows installer服务的Windows出现这个问题不让安装程序,可... 无法通过windows installer服务安装此安装程序包。您必须安装带有更新版本windows installer服务的Windows。 出现这个问题不让安装程序,可以到微软网...
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解决:参数 basepath 不能是相对路径?? - C/C++ - 清泛网 - 专注C/C++及内核技术

...改动或手动设置参数后项目路径发生了变更都会出现这个问题。项目属性 -> 配置 -> 调试:改成上图(即VS默认配置)即...由于手动将调试参数改动或手动设置参数后项目路径发生了变更都会出现这个问题。 项目属性 -> 配置 ->...
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warning C4996 - C/C++ - 清泛网 - 专注C/C++及内核技术

...可能会产生诸如内存泄露、缓冲区溢出、非法访问等安全问题。这些函数如:strcpy、strcat等。 对于这些问题,VC2005建议使用这些函数的更高级的安全版本,即在这些函数名后面加了一个_s的函数。这些安全版本函数使用起来更...