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regex to match a single character that is anything but a space
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123
\s matches any white-space character
\S matches any non-white-space character
You can match a...
What's the difference between isset() and array_key_exists()? [duplicate]
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Between array_key_exists and isset, though both are very fast [O(1)], isset is significantly f...
How to convert an int to string in C?
...o a string.
Here is an example:
int num = 321;
char snum[5];
// convert 123 to string [buf]
itoa(num, snum, 10);
// print our string
printf("%s\n", snum);
If you want to output your structure into a file there is no need to convert any value beforehand. You can just use the printf format spe...
Using CSS :before and :after pseudo-elements with inline CSS?
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You can't specify inline styles for pseudo-elements.
This is because pseudo-elements, like ps...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...t m=static_cast<int>(3.14));
reinterpret_cast很像c的一般类型转换操作
const_cast是把cosnt或volatile属性去掉
介绍
大多程序员在学C++前都学过C，并且习惯于C风格（类型）转换。当写C++（程序）时，有时候我们在使用static_cast<>和reinte...
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
...String = "";
string whitespaceString = " ";
string nonEmptyString = "abc123";
bool result;
result = String.IsNullOrEmpty(nullString); // true
result = String.IsNullOrEmpty(emptyString); // true
result = String.IsNullOrEmpty(whitespaceString); // false
result = String.I...
Convert string to title case with JavaScript
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Here's my version, IMO it's easy to understand and elegant too.
var str = "foo bar baz"
...
Create nice column output in python
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data = [['a', 'b', 'c'], ['aaaaaaaaaa', 'b', 'c'], ['a', 'bbbbbbbbbb', 'c']]
col_width = max(...
Format date and time in a Windows batch script
...: 20140.01_131612 , must be(2014.10.26_131612)
– waza123
Oct 26 '14 at 11:16
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编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...的“trye”就不再是编译器决定如果工作了，而是应该由操作系统来做出决定了。
在线程信息块Thread Information Block里，第一部分(fs:[0])保存了异常处理链的指针。
（在我提供的例子中，就是CxxFrameHandler3的地址）。try的工作就...