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How to perform better document version control on Excel files and SQL schema files
... two .xls files. You probably could add a pre-commit hook that will put a .csv near it and you'll be able to diff those.
– kirelagin
Jun 13 '13 at 10:43
...
What is the difference between Strategy pattern and Dependency Injection?
... ways - you could use the strategy pattern to swap out an XML formatter or CSV formatter, etc.
Dependency Injection is different in that the user is not trying to change the runtime behaviour. Following the example above, we might be creating an XML export program that uses an XML formatter. Rather...
C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...针。每次创建类的新对象时,初始化指针并将引用计数置为1;当对象作为另一对象的副本而创建时,拷贝构造函数拷贝指针并增加与之相应的引用计数;对一个对象进行赋值时,赋值操作符减少左操作数所指对象的引用计数(...
MFC RadioButton用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...顺序进行分组,然后设定每组第一个RadioButton的Group属性为TRUE,分组完成,即从当前设置Group属性为TRUE的RadioButton开始直到碰到下一个选上Group属性的RadioButton的前一个RadioButton为一个组。
3、为单选控件定义Control变量或Value变量...
使用CSplitterWnd实现拆分窗口(多视图显示) - C/C++ - 清泛网 - 专注C/C++及内核技术
...静态拆分窗口中很容易使用两个以上不同种类的视图,因为您可以在每个窗格中指定所用的视图类型。但是在动态拆分窗口中,MFC管理着视图,
除非从 CsplitterWnd派生一个新类并修改拆分窗口的默认操作性能,否则拆分窗口中的...
Should programmers use SSIS, and if so, why? [closed]
...how I feel. In our case, we're using SSIS to do stuff like email (or SFTP) CSVs containing pricing info. The branching, embedded scripts, etc are pretty horrible. If just moved some data around with SSIS, it probably wouldn't be so bad.
– Charles
Aug 24 '10 at ...
Linux Shell中 if else及大于、小于、等于逻辑表达式写法 - C/C++ - 清泛网...
...表达式前后都要有空格。这里的空格很重要,笔者就曾因为空格缺少或位置不对,而浪费好多宝贵的时间。
格式:
if ....; then
....
elif ....; then
....
else
....
fi
[ -f "somefile" ] :判断是否是一个文件
[ -x "/bin/ls" ] :判断/bin/ls...
用C语言程序判断一个浮点型的数是否为零? - c++1y / stl - 清泛IT社区,为创新赋能!
f > -1e-7 && f < 1e-7
详细原理请参见:《浮点数在内存中的表示》。
Flubbie 为App添加魔法动画的拓展 - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!
.aix拓展下载:
原文:https://community.appinventor.mi ... ur-components/38796
App Inventor 2 Encrypt.Security 安全性扩展:MD5哈希,SHA/AES/RSA/BASE6...
...uding a private key and a public key),输入密钥的大小,其单位为bit.it可以是512,1024,2048或4096.密钥越长,它就越安全。当已生成密钥对,该事件OnRsaKeyPairGenerated将触发和传递两个variable.At同时,属性RsaPublicKey和RsaPrivateKey将被自动设置。...
