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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 do I reverse a C++ vector?
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258
There's a function std::reverse in the algorithm header for this purpose.
#include <vector...
Is there a naming convention for Django apps
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112
They must be valid package names. That rules out 2 ("import my-django-app" would be a syntax err...
MongoDb query condition on comparing 2 fields
I have a collection T , with 2 fields: Grade1 and Grade2 , and I want to select those with condition Grade1 > Grade2 , how can I get a query like in MySQL?
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Formatting numbers (decimal places, thousands separators, etc) with CSS
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12
You can use Number.prototype.toLocaleString(). It can also format for other number formats, e.g....
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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Creating a DateTime in a specific Time Zone in c#
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219
Jon's answer talks about TimeZone, but I'd suggest using TimeZoneInfo instead.
Personally I l...
Convert string to binary in python
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127
Something like this?
>>> st = "hello world"
>>> ' '.join(format(ord(x), 'b')...
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 ...
SQL Server Configuration Manager not found
After installing SQL Server 2008, I cannot find the SQL Server Configuration Manager in Start / SQL Server 2008 / Configuration Tools menu.
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