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How to write header row with csv.DictWriter?
Assume I have a csv.DictReader object and I want to write it out as a CSV file. How can I do this?
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How can I check if a file exists in Perl?
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How do i find out what all symbols are exported from a shared object?
I have a shared object(dll). How do i find out what all symbols are exported from that?
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Handle file download from ajax post
I have a javascript app that sends ajax POST requests to a certain URL. Response might be a JSON string or it might be a file (as an attachment). I can easily detect Content-Type and Content-Disposition in my ajax call, but once I detect that the response contains a file, how do I offer the client t...
How to rollback a specific migration?
I have the following migration file db\migrate\20100905201547_create_blocks.rb
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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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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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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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