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If table exists drop table then create it, if it does not exist just create it
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edited Oct 10 '15 at 16:26
Junior Mayhé
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Xcode build failure “Undefined symbols for architecture x86_64”
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edited Mar 19 '14 at 11:55
python
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What is the difference between join and merge in Pandas?
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edited Jan 17 '17 at 21:54
answered Mar 27 '14 at 0:55
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python design patterns [closed]
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edited Dec 28 '18 at 23:32
community wiki
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iOS: How to store username/password within an app?
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edited Jul 30 '14 at 22:39
answered Aug 7 '11 at 10:49
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How to find memory leak in a C++ code/project?
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edited May 22 at 3:44
NAND
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Casting vs using the 'as' keyword in the CLR
...re now, not having thought of using a nullable type and as together :)
EDIT: Note that none of the above talks about performance, other than the value type case, where I've noted that unboxing to a nullable value type is actually slower - but consistent.
As per naasking's answer, is-and-cast or...
How to detect total available/free disk space on the iPhone/iPad device?
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edited Mar 24 '16 at 12:17
Community♦
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String concatenation: concat() vs “+” operator
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edited Oct 12 '17 at 12:57
answered Sep 6 '08 at 16:25
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Django Passing Custom Form Parameters to Formset
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edited Jan 7 '15 at 16:49
answered Mar 8 '09 at 18:00
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