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Validate uniqueness of multiple columns
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You can scope a validates_uniqueness_of call as follows.
validates_uniqueness_of :user_id, :...
Selectors in Objective-C?
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dstnbrkrdstnbrkr
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How to delete a localStorage item when the browser window/tab is closed?
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– vineet
Mar 7 '16 at 6:32
Does this solution really works for IE 11 ? Please suggest. I am having this tr...
Program does not contain a static 'Main' method suitable for an entry point
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answered Jul 31 '13 at 9:32
Eugene GriaznovEugene Griaznov
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How can I parse a YAML file from a Linux shell script?
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It's possible to pass a small script to some interpreters, like Python. An easy way to do so us...
Email address validation using ASP.NET MVC data type attributes
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In which scenario do I use a particular STL container?
I've been reading up on STL containers in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of the...
Detach (move) subdirectory into separate Git repository
I have a Git repository which contains a number of subdirectories. Now I have found that one of the subdirectories is unrelated to the other and should be detached to a separate repository.
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Check if list contains any of another list
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postgresql - add boolean column to table set default
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