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Rails 3 migrations: Adding reference column?
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If you are using the Rails 4.x you can now generate migrations with references, like this:
rails generate migration AddUserRefToProducts user:references
like you can see on rails guides
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Paused in debugger in chrome?
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sometimes you should know where to click.
– Darshan Thanki
Nov 5 '12 at 16:44
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Fastest way to determine if an integer's square root is an integer
...ming language (C/C++). Your results may vary, especially because I don't know how the Java factor will play out.
My approach is threefold:
First, filter out obvious answers. This includes negative numbers and looking at the last 4 bits. (I found looking at the last six didn't help.) I also an...
Auto-indent in Notepad++
...munity wiki
3 revs, 2 users 60%unknown
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How to convert a number to string and vice versa in C++
... edited Feb 17 '15 at 17:34
KnowItAllWannabe
11k66 gold badges3838 silver badges8484 bronze badges
answered Jun 18 '12 at 19:36
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jQuery 1.9 .live() is not a function
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$('#parentElement').on('click', '.myButton', function)
If you do not know what to put as the parent, body always works:
$('body').on('click', '.myButton', function)
See also:
jQuery - how to use the “on()” method instead of “live()”?
jQuery 1.9 Migration Guide
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Format file size as MB, GB, etc [duplicate]
...al String[] units = new String[] { "B", "KB", "MB", "GB", "TB", "EB" }; // now it works up to Long.MAX_VALUE!
– Joe
Jul 6 '12 at 23:49
30
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Is there a way to make GHC provide the type class constraints of typed holes?
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This is now fixed in GHC 8.0 thanks to @DominiqueDevriese's GHC ticket.
Due to extended type defaulting, this isn't immediately obvious in GHCi. With your example,
> show _
<interactive>:7:6: error:
• Found hole: ...
What does “xmlns” in XML mean?
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Hmm...good to know it's a namespace. I used to wonder whether specifying a URI made the html page actually access that website to determine a schema.
– Nav
Mar 31 '14 at 12:15
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How to sort an ArrayList in Java [duplicate]
... return fruit1.fruitName.compareTo(fruit2.fruitName);
}
});
Now your fruits list is sorted based on fruitName.
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