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String concatenation does not work in SQLite
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Why are variables “i” and “j” used for counters?
...ly uses i for the first index, j for the second, and so on. Example (from http://en.wikipedia.org/wiki/Summation):
It's also used that way for collections of things, like if you have a bunch of variables x1, x2, ... xn, then an arbitrary one will be known as xi.
As for why it's that way, I ...
Split a string by a delimiter in python
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What does ^M character mean in Vim?
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Unix uses 0xA for a newline character. Windows uses a combination of two characters: 0xD 0xA. 0xD is the carriage return character. ^M happens to be the way vim displays 0xD (0x0D = 13, M is the 13th letter in the English alphabet).
You can remove all the ^M characters by runni...
Undefined method 'task' using Rake 0.9.0
... about this same error.
The answer:
This is a general Rails problem: http://twitter.com/dhh/status/71966528744071169
There should be a 3.0.8 release soon that fixes it. In the mean time, you can add the following line to your Gemfile:
gem 'rake', '~> 0.8.7'
It's a problem in Ra...
How to get 0-padded binary representation of an integer in java?
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Python coding standards/best practices [closed]
...t that you refer the following:
Code Like a Pythonista: Idiomatic Python
Common mistakes and Warts
How not to write Python code
Python gotcha
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How to read environment variables in Scala
...o override foo if an environment variable VAR_NAME exist.
More details in https://github.com/typesafehub/config#optional-system-or-env-variable-overrides
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Split string to equal length substrings in Java
...if JS did support lookbehind.
I should mention that I don't necessarily recommend this solution if you have other options. The non-regex solutions in the other answers may be longer, but they're also self-documenting; this one's just about the opposite of that. ;)
Also, this doesn't work in Andro...
Using Case/Switch and GetType to determine the object [duplicate]
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