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How to implement a unique index on two columns in rails
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What is the difference between origin and upstream on GitHub?
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How can I filter a Django query with a list of values?
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How can I see the current value of my $PATH variable on OS X?
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What is the difference between os.path.basename() and os.path.dirname()?
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How can I wrap text to some length in Vim?
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Scrolling down both parts of a split-window at the same time in Vim
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Ruby on Rails: How do I add placeholder text to a f.text_field?
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What are the correct link options to use std::thread in GCC under linux?
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What is “incremental linking”?
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