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How do I specify unique constraint for multiple columns in MySQL?
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This works for mysql version 5.5.32
ALTER TABLE `tablename` ADD UNIQUE (`column1` ,`column2`);
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Collections.emptyList() vs. new instance
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edited Jul 8 at 13:32
shareef
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How to sort a NSArray alphabetically?
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Thomas ZoechlingThomas Zoechling
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HTML: How to limit file upload to be only images?
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HTML5 says <input type="file" accept="image/*">. Of course, never trust client-side valid...
Remove a string from the beginning of a string
...ould be.
– salathe
Dec 23 '10 at 10:32
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if (substr($str, 0, strlen($prefix)) == $prefix) can be...
How to subtract X day from a Date object in Java?
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answered Jun 6 '16 at 13:32
Jacob van LingenJacob van Lingen
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Convert Enum to String
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KeithKeith
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Measure execution time for a Java method [duplicate]
...e time.
– hatranpro
Dec 14 '18 at 0:32
Answered in 2010, want to update anything?
– VdeX
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How do I know that the UICollectionView has been loaded completely?
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What's the easy way to auto create non existing dir in ansible
...o create it.
– Matt
Feb 10 '16 at 3:32
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Should note that you may want to add recurse=yes to the ...