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How to implement a unique index on two columns in rails
I have a table and I'm trying to add a unique index on two columns. Those columns are also indexed. So my question is if I just can remove the indexes who were just for one column or if I have to use all three indexes:
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How can I change the copyright template in Xcode 4?
Does anyone know how to change copyright in the templates for Xcode? That is, at the top of a new file it writes:
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What is the difference between origin and upstream on GitHub?
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?
I'm sure this is a trivial operation, but I can't figure out how it's done.
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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()?
What is the difference between os.path.basename() and os.path.dirname() ?
2 Answers
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Static member initialization in a class template
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How to get Visual Studio to open Resolve Conflicts window after a TFS Get
When I do a Get Latest in Visual Studio, if there are conflicts, there is nothing that is displayed to me to make it obvious. Invariably I think everything is OK, do a build, and often the build works.
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Git: copy all files in a directory from another branch
How do I copy all files in a directory from another branch? I can list all of the files in that directory by doing
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What is “incremental linking”?
I've looked at Microsoft's MSDN and all around the web, but I still haven't been able to get a really good idea of what it is.
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