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Fast way to get image dimensions (not filesize)
...more the better. I emphasize fast because my images are quite big (up to 250 MB) and it takes soooo long to get the size with ImageMagick's identify because it obviously reads the images as a whole first.
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Group by with multiple columns using lambda
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var query = source.GroupBy(x => new { x.Column1, x.Column2 });
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Python Sets vs Lists
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It depends on what you are intending to do with it.
Sets are significantly faster when it com...
C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...opy过去编译和调试，我把代码列在下面：
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#include <stdio.h>
struct str{
int len;
char s[0];
};
struct foo {
struct str *a;
};
int main(int argc, char...
HTML: How to create a DIV with only vertical scroll-bars for long paragraphs?
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Use overflow-y. This property is CSS 3.
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CFBundleVersion in the Info.plist Upload Error
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There's at least 1 known bug in Apple's upload server that they've not fixed for more than 12 ...
Multi-line commands in GHCi
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answered Dec 9 '11 at 8:52
Nicolas WuNicolas Wu
4,26722 gold badges2222 silver badges3232 bronze badges
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What regular expression will match valid international phone numbers?
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