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How to write header row with csv.DictWriter?
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Edit:
In 2.7 / 3.2 there is a new writeheader() method. Also, John Machin's answer provides a simpler method of writing the header row.
Simple example of using the writeheader() method now available in 2.7 / 3.2:
from collections imp...
What is the difference between gmake and make?
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edited Jul 28 '09 at 19:21
dmckee --- ex-moderator kitten
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Rails 3 migrations: Adding reference column?
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205
If you are using the Rails 4.x you can now generate migrations with references, like this:
ra...
Does Internet Explorer 8 support HTML 5?
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IE8 beta 2 supports two APIs from HTML5: cross-document messaging and non-SQL storage.
IE8 beta 2 doesn’t implement the HTML5 parsing algorithm or the new elements (no <canvas> or <video> support).
There are also bug f...
rmagick gem install “Can't find Magick-config”
...g to install the rmagick gem. I am on Snowleopard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ImageMagick, which I successfully did. Other suggested installing the "libmagick9-dev library", however, I can not figure out how to do this.
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How to fix: “HAX is not working and emulator runs in emulation mode”
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200
Yes it should be fixed, HAXM isn't working.
How much RAM is set for use inside your AVD config...
String concatenation vs. string substitution in Python
...meit.Timer('so_q_sub(1000)','from __main__ import so_q_sub')
>>> t2 = timeit.Timer('so_q_cat(1000)','from __main__ import so_q_cat')
>>> t1.timeit(number=10000000)
12.166618871951641
>>> t2.timeit(number=10000000)
5.7813972166853773
>>> t1.timeit(number=1)
1.10349...
How do I step out of a loop with Ruby Pry?
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edited May 22 '19 at 14:05
Qortex
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What's the Android ADB shell “dumpsys” tool and what are its benefits?
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248
What's dumpsys and what are its benefit
dumpsys is an android tool that runs on the device an...