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How to convert floats to human-readable fractions?
...e's a link explaining the math behind converting a decimal to a fraction:
http://www.webmath.com/dec2fract.html
And here's an example function for how to actually do it using VB (from www.freevbcode.com/ShowCode.asp?ID=582):
Public Function Dec2Frac(ByVal f As Double) As String
Dim df As Doub...
Matplotlib discrete colorbar
...a proper contour routine was
added to matplotlib - see contour_demo.py and
http://matplotlib.sf.net/matplotlib.pylab.html#-contour.
"""
from pylab import *
delta = 0.01
x = arange(-3.0, 3.0, delta)
y = arange(-3.0, 3.0, delta)
X,Y = meshgrid(x, y)
Z1 = bivariate_normal(X, Y, 1.0, 1.0, 0.0, 0.0)
Z...
Why isn't vector a STL container?
...
This comes from http://www.cplusplus.com/reference/vector/vector-bool/
Vector of bool This is a specialized version of vector, which is used
for elements of type bool and optimizes for space.
It behaves like the unspecialized vers...
Keyboard shortcuts in WPF
...
One way is to add your shortcut keys to the commands themselves them as InputGestures. Commands are implemented as RoutedCommands.
This enables the shortcut keys to work even if they're not hooked up to any controls. And since menu items understand keyboard gestures, t...
How to make a flat list out of list of lists?
...mes the sum of x for x from 1 to L excluded, i.e., I * (L**2)/2.
The list comprehension just generates one list, once, and copies each item over (from its original place of residence to the result list) also exactly once.
s...
How to implement a tree data-structure in Java? [closed]
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@Joa A four-years-older me agrees with you completely. Nix the tree class.
– jjnguy
Sep 5 '14 at 13:19
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sho...
Visualizing branch topology in Git
... and I find it difficult to maintain a mental model of all my branches and commits. I know I can do a git log to see the commit history from where I am, but is there a way to see the entire branch topography, something like these ASCII maps that seem to be used everywhere for explaining branches?
...
PHP - how to create a newline character?
...e the constant PHP_EOL to get the right character no matter the platform.
http://us3.php.net/manual/en/reserved.constants.php
A simple usage example:
<?php
$data = 'First line' . PHP_EOL .
'Second line' . PHP_EOL .
'Third line';
file_put_contents("filename.txt", $data);
?>
...
Default string initialization: NULL or Empty? [closed]
...
seems like this is a special case of the http://en.wikipedia.org/wiki/Null_Object_pattern
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How to create CSV Excel file C#? [closed]
...ple git-repository out of the topic-starter's code and all the additions:
https://github.com/jitbit/CsvExport
I also added a couple of useful fixes myself. Everyone could add suggestions, fork it to contribute etc. etc. etc. Send me your forks so I merge them back into the repo.
PS. I posted all ...