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How do I exchange keys with values in a dictionary?
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Python 2:
res = dict((v,k) for k,v in a.iteritems())
Python 3 (thanks to @erik):
res = dict((v,k) for k,v in a.items())
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How to map atan2() to degrees 0-360
atan2(y, x) has that discontinuity at 180° where it switches to -180°..0° going clockwise.
15 Answers
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Command line progress bar in Java
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I have implemented this sort of thing before. Its not so much about java, but what characters to send to the console.
The key is the difference between \n and \r.
\n goes to the start of a new line. But \r is just carriage return - it goes back to the start of the same...
Is there a vim command to relocate a tab?
How can I change the position / order of my current tab in Vim ? For example, if I want to reposition my current tab to be the first tab?
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Call a REST API in PHP
...ed to make a PHP call to. But as a matter of fact the documentation given with the API is very limited, so I don't really know how to call the service.
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rsync: difference between --size-only and --ignore-times
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There are several ways rsync compares files -- the authoritative source is the rsync algorithm description: https://www.andrew.cmu.edu/course/15-749/READINGS/required/cas/tridgell96.pdf. The wikipedia article on rsync is also very good.
For local files, rsync compares metadata and...
How to float 3 divs side by side using CSS?
... Could you elaborate on why to use <br style="clear: left;" /> with that style in particular.
– Mike de Klerk
Dec 21 '15 at 15:42
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Undefined method 'task' using Rake 0.9.0
...ke to the latest version ( 0.9.0.beta.4 ) and the rake command ends up with the following error message:
8 Answers
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Set EditText cursor color
...me on a tablet project. However, I have a fragment on screen which has a white background. I am adding an EditText component on this fragment. I've tried to override the theme by setting the background of the Holo.Light theme resources. However, my text cursor (carat) remains white and hence, invi...
jQuery disable a link
Anyone know how to disable a link in jquery WITHOUT using return false; ?
17 Answers
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