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What is the python “with” statement designed for?
...:
old_streams[sname] = getattr(sys, sname)
setattr(sys, sname, stream)
yield
finally:
for sname, stream in old_streams.iteritems():
setattr(sys, sname, stream)
with redirected(stdout=open("/tmp/log.txt", "w")):
# these print state...
How to kill a child process after a given timeout in Bash?
...a bash script that launches a child process that crashes (actually, hangs) from time to time and with no apparent reason (closed source, so there isn't much I can do about it). As a result, I would like to be able to launch this process for a given amount of time, and kill it if it did not return su...
Two statements next to curly brace in an equation
.... The packages amsmath, amssymb and amsthm are hard to do without when typesetting math.
– srean
Oct 26 '10 at 20:10
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How to implement the factory method pattern in C++ correctly
There's this one thing in C++ which has been making me feel uncomfortable for quite a long time, because I honestly don't know how to do it, even though it sounds simple:
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What are the differences between segment trees, interval trees, binary indexed trees and range trees
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How can I produce an effect similar to the iOS 7 blur view?
...receiving a UIImage back that has been blurred, now all that is left is to set that blurred image as the background of the view you will be presenting. Like I said, this will not be a perfect match for what Apple is doing, but it should still look pretty cool.
Hope it helps.
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How to remove files and directories quickly via terminal (bash shell) [closed]
...he right thing. You can specify these with -r or not; it's an independent setting.
And as usual, you can combine switches: rm -r -i is just rm -ri, and rm -r -f is rm -rf.
Also note that what you're learning applies to bash on every Unix OS: OS X, Linux, FreeBSD, etc. In fact, rm's syntax is the...
Adding gif image in an ImageView in android
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First, copy your GIF image into Asset Folder of your app
create following classes and paste the code
AnimationActivity: -
public class AnimationActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundl...
How to swap keys and values in a hash
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Personally I avoid setting the hash's default value behaviour. I worry that whatever code I give this hash to wouldn't be expecting a hash to behave in that way, and it could cause some insidious error later. I can't really justify this concern...
How can I access “static” class variables within class methods in Python?
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