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Pandas DataFrame column to list [duplicate]
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AMC
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answered May 20 '14 at 0:09
AkavallAkavall
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Install a Python package into a different directory using pip?
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@Piotr: yes there is see my answer. Using '--prefix' is a bit coarse, but works nice if you want your pure python to go under /usr/lib/pythonX.Y/site-packages instead of /usr/local/lib/pythonX.Y/site-packages.
– Anthon
Jun 13 '12 at 14:39
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How to find all the subclasses of a class given its name?
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10 Answers
10
Active
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Is embedding background image data into CSS as Base64 good or bad practice?
...Limits for iOS 3.2 were pretty low (25K per file), but are getting larger (100K) for newer versions of Mobile Safari. So be sure to keep an eye on your total file size when including data URIs.
http://www.yuiblog.com/blog/2010/06/28/mobile-browser-cache-limits/
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How to increment a NSNumber
..., with the use of object literals, you can clean the code up even a little bit more...
NSNumber *x = @(1);
x = @([x intValue] + 1);
// x = 2
Still kind of a pain to deal with the boxing and unboxing everything to do simple operations, but it's getting better, or at least shorter.
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How to copy a directory structure but only include certain files (using windows batch files)
...copy a directory structure but only include some files. E.g given the following directory structure:
15 Answers
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Encode String to UTF-8
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Gray
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answered Apr 20 '11 at 11:58
Joachim Sau...
Seedable JavaScript random number generator
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// can't modulu nextInt because of weak randomness in lower bits
var rangeSize = end - start;
var randomUnder1 = this.nextInt() / this.m;
return start + Math.floor(randomUnder1 * rangeSize);
}
RNG.prototype.choice = function(array) {
return array[this.nextRange(0, array....
How many characters can a Java String have?
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Assuming a 64-bit JVM, since you'd need 8GB of virtual memory to store a string of that length.
– Robert Fraser
Jul 24 '09 at 20:59
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What is more efficient? Using pow to square or just multiply it with itself?
...0.011254
2.45829e+52
This is on an Intel Core Duo running Ubuntu 9.10 64bit. Compiled using gcc 4.4.1 with -o2 optimization.
So in C, yes x*x*x will be faster than pow(x, 3), because there is no pow(double, int) overload. In C++, it will be the roughly same. (Assuming the methodology in my testi...