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How do I create a unique constraint that also allows nulls?

... edited May 23 '17 at 12:10 Community♦ 111 silver badge answered Apr 20 '09 at 10:20 Jose BasilioJose Ba...
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IEnumerable vs List - What to Use? How do they work?

...an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to reify the results right away. Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because...
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Get list of passed arguments in Windows batch script (.bat)

... dancavallaro has it right, %* for all command line parameters (excluding the script name itself). You might also find these useful: %0 - the command used to call the batch file (could be foo, ..\foo, c:\bats\foo.bat, etc.) %1 is the first command line parameter,...
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Dependency Injection vs Factory Pattern

...ection, we can solve using the factory pattern as well. Looks like when it comes to usage/design the difference between dependency injection and factory is blurred or thin. ...
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How to add a line break in C# .NET documentation

...ense. Found this question, where Hans explained the problem: stackoverflow.com/questions/7070737/…. – Neolisk Nov 25 '13 at 16:26 1 ...
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How to destroy an object?

... seems to have better performance (not tested but documented on one of the comments from the PHP official manual). That said, do keep in mind that PHP always destroys the objects as soon as the page is served. So this should only be needed on really long loops and/or heavy intensive pages. ...
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Why does this code using random strings print “hello world”?

... @Vulcan - the javadoc says that the seed is 48 bits. docs.oracle.com/javase/7/docs/api/java/util/Random.html. And besides, the actual seeds are 32 bit values. – Stephen C Mar 3 '13 at 4:58 ...
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Android image caching

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Parallel foreach with asynchronous lambda

...t Task.WhenAll(tasks); var count = bag.Count; If you need something more complex, check out Stephen Toub's ForEachAsync post. share | improve this answer | follow ...
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What Automatic Resource Management alternatives exist for Scala?

... community wiki 2 revschengpohi ...