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Truncate number to two decimal places without rounding

...2.55 2.99999 => 2.99 4.27 => 4.27 15.7784514 => 15.77 123.5999 => 123.59 0.000000199 => 1.99 * * As mentioned in the note, that's due to javascript implicit conversion into exponential for "1.99e-7" And for some other values of n: 15.001097 => 15.0010 (n=4) 0.00...
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How do I return to an older version of our code in Subversion?

...nd the right revision number. Note down the good revision number (assuming 123 for examples below). Update to the latest revision: svn update Undo all the changes between the revision you want and the latest version: svn merge -r HEAD:123 . svn commit "Reverted to revision 123" (the same as Jon...
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How do you write a migration to rename an ActiveRecord model and its table in Rails?

I'm terrible at naming and realize that there are a better set of names for my models in my Rails app. Is there any way to use a migration to rename a model and its corresponding table? ...
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A numeric string as array key in PHP

Is it possible to use a numeric string like "123" as a key in a PHP array, without it being converted to an integer? 11 A...
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redmine开源项目管理工具介绍 - 开源 & Github - 清泛网 - 专注IT技能提升

...化显示,同时它支持多项目管理。Redmine是一个自由开放源码软件的解决方案,它提供集成的项目管理功能,问题跟踪,并为多个版本控制的选项的支持。 二、模块介绍 1.概述 该页面提供一个关于该项目的总体概述。其中问题...
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Swift 和 .Net 开源,回顾 2015 年 9 大开源事件 - 开源 & Github - 清泛网 - 专注IT技能提升

...得开发者的注意力。这两个项目是在麻省理工学院的开放源码许可证下发布的,该公司还为其 Azure 云上的一个网络交换机开发了一个基于 Linux 的操作系统。 3、富士通开源自己产品 富士通使用 Linux 已经几十年了,同时也致...
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国际 C 语言混乱代码大赛结果 - 创意 - 清泛网 - 专注C/C++及内核技术

...ang 应是第 7 回。 虽然主办方目前还没有公布这次比赛的源码,但可以围观他俩之前的作品。 Best self documenting program (2011/hou/hou.c) Best use of 1 Infinite Loop (2013/hou/hou.c) Don Yang,Google 工程师 2004/omoikane.c omoikane —&ra...
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CDHtmlDialog的基本使用(JS调用C++函数的实现) - C/C++ - 清泛网 - 专注IT技能提升

...eturn TRUE; } 这样,直接允许访问内部函数,绕过确认。 源码点此下载。 反过来,C++调用Js代码,请看下篇《CDHtmlDialog的基本使用(C++调用JS函数的实现)》。
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ATL COM开发入门(二)(ActiveX/COM组件回调JS) - C/C++ - 清泛网 - 专注C/C++及内核技术

...的例子,参见《ATL创建的ActiveX(COM组件)实现JS回调》。 源码点此下载,如有问题请点此。 ATL COM ActiveX 入门 JS回调
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cmake与autoconf+automake的对比 - C/C++ - 清泛网 - 专注C/C++及内核技术

...UDES= include_HEADES= 或CFLAGS=-I include_directories(list) 源码搜索 aux_source_directories(. list) 依赖库 LIBS= LDADD= target_link_libraries(binname librarylist) 标志 CFLAGS= LDFLAGS= set(CMAKE_C_FLAGS ...) libtool AC_PROG_LIBTOOL...