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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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258
var query = source.GroupBy(x => new { x.Column1, x.Column2 });
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HTML: How to create a DIV with only vertical scroll-bars for long paragraphs?
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240
Use overflow-y. This property is CSS 3.
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Python Sets vs Lists
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236
It depends on what you are intending to do with it.
Sets are significantly faster when it com...
CFBundleVersion in the Info.plist Upload Error
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210
There's at least 1 known bug in Apple's upload server that they've not fixed for more than 12 ...
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...
What regular expression will match valid international phone numbers?
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23 Answers
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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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Version number comparison in Python
... then compare the lists of numbers.
import re
def mycmp(version1, version2):
def normalize(v):
return [int(x) for x in re.sub(r'(\.0+)*$','', v).split(".")]
return cmp(normalize(version1), normalize(version2))
This is the same approach as Pär Wieslander, but a bit more compact:
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Which characters need to be escaped when using Bash?
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291
There are two easy and safe rules which work not only in sh but also bash.
1. Put the whole s...