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Generate list of all possible permutations of a string
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community wiki
4 revs, 3 users 80%alumb
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Difference between VARCHAR and TEXT in MySQL [duplicate]
...EXT, but be careful: MEDIUMTEXT stores strings up to 16 MB, LONGTEXT up to 4 GB. If you use LONGTEXT and get the data via PHP (at least if you use mysqli without store_result), you maybe get a memory allocation error, because PHP tries to allocate 4 GB of memory to be sure the whole string can be bu...
How to test multiple variables against a value?
...st, tuples are faster than sets so long as the size of the tuple is around 4-8 elements. If you have to scan more than that, use a set, but if you are looking for an item out of 2-4 possibilities, a tuple is still faster! If you can arrange for the most likely case to be first in the tuple, the wi...
Null coalescing in powershell
...l "new value"
New-Alias "?:" IfTrue
$ans = ?: ($q -eq "meaning of life") 42 $otherval
Clearly this isn't going to be to everyone's taste, but may be what you're looking for.
As Thomas notes, one other subtle difference between the C# version and the above is that C# performs short-circuiting of...
Delete all local git branches
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419
The 'git branch -d' subcommand can delete more than one branch. So, simplifying @sblom's answ...
Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
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Pascal CuoqPascal Cuoq
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Functions that return a function
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answered Oct 2 '11 at 23:44
kzhkzh
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ORA-00979 not a group by expression
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234
You must put all columns of the SELECT in the GROUP BY or use functions on them which compress t...
What reference do I need to use Microsoft.Office.Interop.Excel in .NET?
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Update (thanks user2347528)
These assemblies are available as NuGet packages, which is much easier than my original answer.
You can install by either right clicking on References in your project and selecting Manage NuGet packages... and searchin...