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What generates the “text file busy” message in Unix?
....com/a/1282540/833300
– jma
Oct 11 '18 at 10:35
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show 4 more comments
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If list index exists, do X
...rection.
– user1569317
Aug 3 '12 at 18:37
1
This doesn't account for negative indexes. The best w...
Rails detect if request was AJAX
...arAmir Raminfar
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jQuery: Adding two attributes via the .attr(); method
...o DOM.
– Akash Kava
Mar 21 '15 at 9:18
To set multiple attributes you need to wrap everything in { ... }... Don't the ...
Vim delete blank lines
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edited Jun 18 '10 at 8:27
answered Apr 1 '09 at 15:36
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MongoDB Show all contents from all collections
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edited Oct 14 '18 at 17:39
Akavall
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Finish an activity from another activity
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188
Make your activity A in manifest file: launchMode = "singleInstance"
When the user clicks new...
ValueError : I/O operation on closed file
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answered Mar 26 '18 at 21:43
SlakeSlake
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WPF: How to display an image at its original size?
...be a good thing.
– Kyle Delaney
Apr 18 '17 at 15:49
@KyleDelaney Have you read the article I linked in the answer?
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Validate uniqueness of multiple columns
...cted behavior
– Nikita Hismatov
Mar 18 '13 at 9:52
71
In Rails 4, this becomes: validates :user_i...