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How to define custom configuration variables in rails
I was wondering how to add custom configuration variables to a rails application and how to access them in the controller, for e.g I wanna be able to define an upload_directory in the configuration files say development.rb and be able to access it in one of my controllers.
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How to calculate a logistic sigmoid function in Python?
This is a logistic sigmoid function:
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LINQ to SQL: Multiple joins ON multiple Columns. Is this possible?
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What is a daemon thread in Java?
Can anybody tell me what daemon threads are in Java ?
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Xcode build failure “Undefined symbols for architecture x86_64”
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how to use sed, awk, or gawk to print only what is matched?
I see lots of examples and man pages on how to do things like search-and-replace using sed, awk, or gawk.
11 Answers
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Changing default encoding of Python?
I have many "can't encode" and "can't decode" problems with Python when I run my applications from the console. But in the Eclipse PyDev IDE, the default character encoding is set to UTF-8 , and I'm fine.
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What is the purpose of Rank2Types?
I am not really proficient in Haskell, so this might be a very easy question.
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Adjust width and height of iframe to fit with content in it
I need a solution for auto-adjusting the width and height of an iframe to barely fit its content. The point is that the width and height can be changed after the iframe has been loaded. I guess I need an event action to deal with the change in dimensions of the body contained in the iframe...
How to check if a process id (PID) exists
In a bash script, I want to do the following (in pseudo-code):
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