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Explaining Python's '__enter__' and '__exit__'
..._future__ import with_statement at the top of the file if you're on Python 2.5).
with DatabaseConnection() as mydbconn:
# do stuff
PEP343 -- The 'with' statement' has a nice writeup as well.
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How to make graphics with transparent background in R using ggplot2?
I need to output ggplot2 graphics from R to PNG files with transparent background. Everything is ok with basic R graphics, but no transparency with ggplot2:
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Shorthand way for assigning a single field in a record, while copying the rest of the fields?
..., b :: Int, c :: String } -- define a Foo
> let foo = Foo { a = 1, b = 2, c = "Hello" } -- create a Foo
> let updateFoo x = x { c = "Goodbye" } -- function to update Foos
> updateFoo foo -- update the Foo
Foo {a = 1, b = 2, c = "G...
How to wait until an element exists?
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edited Jul 15 at 22:27
Khushraj Rathod
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answered May 24 '1...
How to test chrome extensions?
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+250
Yes, the existing frameworks are pretty useful..
In the recent past, I have placed all my tests on a "test" page that was embedded ...
Error in plot.new() : figure margins too large in R
...plots with smaller data sets. However, when I try to plot a large dataset (2gb+), I can produce the plot just fine, but the legend doesn't show up. Any advice? or alternatives?
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What are the differences between segment trees, interval trees, binary indexed trees and range trees
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2 Answers
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ignoring any 'bin' directory on a git project
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Before version 1.8.2, ** didn't have any special meaning in the .gitignore. As of 1.8.2 git supports ** to mean zero or more sub-directories (see release notes).
The way to ignore all directories called bin anywhere below the current level in ...
Vim: How to insert in visual block mode?
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210
Try this
After selecting a block of text, press Shift+i or capital I.
Lowercase i will not wor...
Difference between float and double in php?
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edited Dec 11 '14 at 16:27
ratchet freak
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answe...