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Algorithm to find Largest prime factor of a number
... very fast in general.
The best known method for factoring numbers up to 100 digits long is the Quadratic sieve. As a bonus, part of the algorithm is easily done with parallel processing.
Yet another algorithm I've heard of is Pollard's Rho algorithm. It's not as efficient as the Quadratic Sieve i...
In Python, how do I use urllib to see if a website is 404 or 200?
...a=urllib.urlopen('http://www.google.com/asdfsf')
>>> a.getcode()
404
>>> a=urllib.urlopen('http://www.google.com/')
>>> a.getcode()
200
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VideoRecorder 拓展：前台预览录制 + 后台无预览录制，支持分辨率、码率设...
...否启用闪光灯，默认 false
CameraOrientation
摄像头方向（0/90/180/270），默认自动检测
Quality
视频画质预设，默认 HIGHEST。支持 HIGHEST、LOWEST、720P、1080P、480P、1920x1080 等
BitRate
视频编码码率（bps），默认 0 自动根据分辨率计...
'size_t' vs 'container::size_type'
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108
The standard containers define size_type as a typedef to Allocator::size_type (Allocator is a t...
difference between each.with_index and each_with_index in Ruby?
...index|
puts "#{index}: #{value}"
end
Outputs:
2: foo
3: bar
4: baz
0: foo
1: bar
2: baz
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Detecting if an NSString contains…?
...geOfString:@"is " options:NSCaseInsensitiveSearch];
if(isRange.location == 0) {
//found it...
} else {
NSRange isSpacedRange = [someString rangeOfString:@" is " options:NSCaseInsensitiveSearch];
if(isSpacedRange.location != NSNotFound) {
//found it...
}
}
You can easily add this ...
Add column with number of days between dates in DataFrame pandas
...'] - df['B']
In [14]: df
Out[14]:
A B C
one 2014-01-01 2014-02-28 -58 days
two 2014-02-03 2014-03-01 -26 days
Note: ensure you're using a new of pandas (e.g. 0.13.1), this may not work in older versions.
...
Generate a random number in the range 1 - 10
...way to tell pg's random() function to get me only numbers between 1 and 10?
7 Answers
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Deleting elements from std::set while iterating
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180
This is implementation dependent:
Standard 23.1.2.8:
The insert members shall not affect th...