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Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue
...working on a UI for an app, and I'm attempting to use grayscale icons, and allow the user to change the theme to a color of their choosing. To do this, I'm trying to just apply a ColorFilter of some sort to overlay a color on top of the drawable. I've tried using PorterDuff.Mode.MULTIPLY, and it wor...
Play a Sound with Python [duplicate]
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Avoid oss, it's old. I don't think I even have it installed anymore.
– Jeffrey Aylesworth
Jan 30 '10 at 19:47
8
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How to log a method's execution time exactly in milliseconds?
...ed for being a bad example. See also the related answer that explains this all in more detail: stackoverflow.com/a/30363702/43615
– Thomas Tempelmann
Jun 4 '16 at 13:36
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How do you set, clear, and toggle a single bit?
... behaviour to shift by more than the width of a long. The same applies to all the rest of the examples.
Clearing a bit
Use the bitwise AND operator (&) to clear a bit.
number &= ~(1UL << n);
That will clear the nth bit of number. You must invert the bit string with the bitwise NOT op...
List of lists into numpy array
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this automatically convert a list of list in a 2D array because the length of all included lists are the same. Do you know how not to do that: make an array of list even if all the lists have the same length? Or is it possible to convert a...
Rotating and spacing axis labels in ggplot2
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Change the last line to
q + theme(axis.text.x = element_text(angle = 90, vjust = 0.5, hjust=1))
By default, the axes are aligned at the center of the text, even when rotated. When you rotate +/- 90 degrees, you usually want it to be aligned at the edge instead:
The image ab...
How to build & install GLFW 3 and use it in a Linux project
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Step 1: Installing GLFW 3 on your system with CMAKE
For this install, I was using KUbuntu 13.04, 64bit.
The first step is to download the latest version (assuming versions in the future work in a similar way) from www.glfw.org, probably ...
Print multiple arguments in Python
...or", name, "is", score)
If you don't want spaces to be inserted automatically by print in the above example, change the sep parameter:
print("Total score for ", name, " is ", score, sep='')
If you're using Python 2, won't be able to use the last two because print isn't a function in Python 2. Y...
How to find where a method is defined at runtime?
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This is really late, but here's how you can find where a method is defined:
http://gist.github.com/76951
# How to find out where a method comes from.
# Learned this from Dave Thomas while teaching Advanced Ruby Studio
# Makes the cas...
data.table vs dplyr: can one do something well the other can't or does poorly?
...j and by together is by design. By keeping related operations together, it allows to easily optimise operations for speed and more importantly memory usage, and also provide some powerful features, all while maintaining the consistency in syntax.
1. Speed
Quite a few benchmarks (though mostly on g...