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Decreasing for loops in Python impossible?
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for n in range(6,0,-1):
print n
# prints [6, 5, 4, 3, 2, 1]
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How do I efficiently iterate over each entry in a Java Map?
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5153
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How to remove gaps between subplots in matplotlib?
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103
You can use gridspec to control the spacing between axes. There's more information here.
imp...
How to check if hex color is “too black”?
...rceived brightness.
Assuming a six character colour:
var c = c.substring(1); // strip #
var rgb = parseInt(c, 16); // convert rrggbb to decimal
var r = (rgb >> 16) & 0xff; // extract red
var g = (rgb >> 8) & 0xff; // extract green
var b = (rgb >> 0) & 0xff;...
Why 0 is true but false is 1 in the shell?
The above will output 1 , which is contradictory with all other programming languages I know.
10 Answers
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Fast way to get image dimensions (not filesize)
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195
The file command prints the dimensions for several image formats (e.g. PNG, GIF, JPEG; recent...
Java - get pixel array from image
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182
I was just playing around with this same subject, which is the fastest way to access the pixel...
Ruby, remove last N characters from a string?
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13 Answers
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Position of least significant bit that is set
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170
Bit Twiddling Hacks offers an excellent collection of, er, bit twiddling hacks, with performan...
Given an array of numbers, return array of products of all other numbers (no division)
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