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What are the mathematical/computational principles behind this game?
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150
Finite Projective Geometries
The axioms of projective (plane) geometry are slightly different ...
How to change navbar collapse threshold using Twitter bootstrap-responsive?
I'm using Twitter Bootstrap 2.0.1 in a Rails 3.1.2 project, implemented with bootstrap-sass. I'm loading both the bootstrap.css and the bootstrap-responsive.css files, as well as the bootstrap-collapse.js Javascript.
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Permutations in JavaScript?
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108
If you notice, the code actually splits the chars into an array prior to do any permutation, so...
How do I convert a numpy array to (and display) an image?
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240
You could use PIL to create (and display) an image:
from PIL import Image
import numpy as np
w...
How do I set a background-color for the width of text, not the width of the entire element, using CS
... I want is for the green background to be just behind the text, not to be 100% of the page width. Here is my current code:
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Reset C int array to zero : the fastest way?
Assuming that we have a T myarray[100] with T = int, unsigned int, long long int or unsigned long long int, what is the fastest way to reset all its content to zero (not only for initialization but to reset the content several times in my program)? Maybe with memset?
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How to initialize a two-dimensional array in Python?
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for i in range (0, 10): \
new = [] \ can be replaced } this too
for j in range (0, 10): } with a list /
new.append(foo) / comprehension /
twod...
What is the most efficient string concatenation method in python?
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edited May 11 '16 at 7:04
Quentin Pradet
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How to remove leading zeros from alphanumeric text?
...s leading zeroes, but leaves one if necessary (i.e. it wouldn't just turn "0" to a blank string).
s.replaceFirst("^0+(?!$)", "")
The ^ anchor will make sure that the 0+ being matched is at the beginning of the input. The (?!$) negative lookahead ensures that not the entire string will be matched....
Truncate Two decimal places without rounding
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value = Math.Truncate(100 * value) / 100;
Beware that fractions like these cannot be accurately represented in floating point.
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