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Add unique constraint to combination of two columns
...g an exception (exceptions are expensive).
http://www.sqlperformance.com/2012/08/t-sql-queries/error-handling
http://www.mssqltips.com/sqlservertip/2632/checking-for-potential-constraint-violations-before-entering-sql-server-try-and-catch-logic/
If you want to prevent exceptions from bubbling up ...
What is the AppDelegate for and how do I know when to use it?
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answered Jan 27 '17 at 18:01
SiddharthSiddharth
8,7191111 gold badges7474 silver badges129129 bronze badges
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How can I specify a [DllImport] path at runtime?
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edited Jan 12 '12 at 16:01
answered Jan 12 '12 at 13:55
R...
Emulating a do-while loop in Bash
...true.
– Fleshgrinder
Dec 2 '19 at 7:01
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How to make rounded percentages add up to 100%
...on when the last element is 0 and previous ones add to 100. E.g. [52.6813880126183, 5.941114616193481, 24.55310199789695, 8.780231335436383, 8.04416403785489, 0]. The last one logically returns -1. I thought of the following solution really quickly but there's probably something better: jsfiddle.net...
Is it possible to set a custom font for entire of application?
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– Christopher Rivera
Mar 26 '14 at 19:01
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Is 0 a decimal literal or an octal literal?
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@MSalters In your example, 0123 would match both octal-literal and decimal-literal, but would have different meanings either way.
– fluffy
Aug 1 '11 at 18:43
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Benefits of prototypal inheritance over classical?
... years late but I really think the current answers do not provide enough information about how prototypal inheritance is better than classical inheritance.
First let's see the most common arguments JavaScript programmers state in defence of prototypal inheritance (I'm taking these arguments from th...
Why should I use tags vs. release/beta branches for versioning?
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answered Mar 21 '12 at 18:01
Justin ᚅᚔᚈᚄᚒᚔJustin ᚅᚔᚈᚄᚒᚔ
14.1k44 gold badges4646 silver badges6262 bronze badges
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Calculate the median of a billion numbers
...haps a sorting machine could send a message meaning "100 values less than 101". The control machine could then perform a modified merge, in which it finds the least of all those top-of-a-range values, then tells all the sorting machines what it was, so that they can (a) tell the control machine how ...