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How to rollback a specific migration?
I have the following migration file db\migrate\20100905201547_create_blocks.rb
14 Answers
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How can I force browsers to print background images in CSS?
This question was asked before but the solution is not applicable in my case. I want to make sure certain background images are printed because they are integral to the page. (They are not images directly in the page because there are several of them being used as CSS sprites.)
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How to get the first element of the List or Set? [duplicate]
I'd like to know if I can get the first element of a list or set. Which method to use?
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Check if a class has a member function of a given signature
I'm asking for a template trick to detect if a class has a specific member function of a given signature.
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Which is better, number(x) or parseFloat(x)?
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Is there a Python equivalent to Ruby's string interpolation?
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How to run multiple shells on Emacs
I am using Emacs 23.3.1 on windows 7. I know that I can run shell from emacs using M-x shell. I would like to have multiple shell windows in the same time, but typing M-x shell a second time just opens me the same shell window.
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Getting the last element of a list
In Python, how do you get the last element of a list?
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Zip lists in Python
I am trying to learn how to "zip" lists. To this end, I have a program, where at a particular point, I do the following:
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Is there any sed like utility for cmd.exe? [closed]
I want to programmatically edit file content using windows command line ( cmd.exe ). In *nix there is sed for this tasks. Is there any useful native equivalent in windows?
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