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Understanding Python's “is” operator
...floats and larger ints aren't interned.
– Magnus Lyckå
Sep 21 '17 at 13:56
2
@MagnusLyckå there...
SQL command to display history of queries
I would like to display my executed sql command history in my MYSQL Query Browser. What is the sql statement for displaying history?
...
How to do a regular expression replace in MySQL?
...exp doesn't seem to have support for multibyte characters. regexp_replace('äöõü', 'ä', '') returns a long numeric string instead of real text.
– lkraav
Feb 20 '12 at 1:44
3
...
ByteArray 扩展 - 字节数组处理工具 · App Inventor 2 中文网
... 属性
方法
事件
使用示例
基本用法
读写整数
字符串处理
文件操作
字节序转换
常见应用场景
1. 网络通信
2. ...
How to prevent http file caching in Apache httpd (MAMP)
... 30 '12 at 15:30
Charlie RudenstålCharlie Rudenstål
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线程访问窗口资源的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...CWnd::AssertValid()检查，就会遇到断言失败。具体原因在于MFC管理窗口的机制。MFC有个窗口句柄和窗口类对象的映射表，就是Windows对象(句柄)和C++对象的一个映射，它是在窗口调用CWnd::Create()，CWnd::CreateEx()时，就添加到映射表里的...
How do I do a case-insensitive string comparison?
...trings in all instances and therefore the normalization needs to be done ('å' vs. 'å'). D145 introduces "canonical caseless matching":
import unicodedata
def NFD(text):
return unicodedata.normalize('NFD', text)
def canonical_caseless(text):
return NFD(NFD(text).casefold())
NFD() is c...
iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...TIMIZE__ 时，可以让代码在release时执行，在debug时不执行。示例如下：
#ifndef__OPTIMIZE__
//这里执行的是debug模式下
else
//这里执行的是release模式下
#endif
（2）__i386__ 与 __x86_64__ ：用于模拟器环境和真机环境的判断。满足该条件...
Mozilla PDF.js：PDF在线预览 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...hub上面我们可以下载PDF.js项目源代码，examples里有几个demo示例，helloworld运行就报错，此处省略研究过程1W字，大家只用看结论就可以了：IE9报错就升级的IE10，我也是试出来的，这个时候还不知道原因。其他的demo示例运行不是页...
Version number comparison in Python
...(normalize(version1), normalize(version2))
This is the same approach as Pär Wieslander, but a bit more compact:
Here are some tests, thanks to "How to compare two strings in dot separated version format in Bash?":
assert mycmp("1", "1") == 0
assert mycmp("2.1", "2.2") < 0
assert mycmp("3.0.4...