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No ConcurrentList in .Net 4.0?

... of concurrent writes to see any sort of lock contention on this; and even then, the average performance of each write would still beat out the more expensive albeit lockless implementation in ConcurrentList<T>. In the relatively rare event that the list's internal array needs to resize itsel...
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Explain the use of a bit vector for determining if all characters are unique

... lower case characters. However if you mix lower and upper case characters then it would not work. By the way, if you do not subtract 'a' from each character (see below statement) then this program will work correctly for only String with upper case characters or String with only lower case charact...
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Is arr.__len__() the preferred way to get the length of an array in Python?

...es sense for it to have a length, just define a __len__() method on it and then one can call len on those instances. share | improve this answer | follow | ...
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What does LINQ return when the results are empty

...g a .FirstOrDefault()/.Where() will be just as much overhead but you would then be able to catch the object(s) returned from the query share | improve this answer | follow ...
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how to delete all cookies of my website in php

... @poke: If cookie names are in Array notation, eg: user[username] Then PHP will automatically create a corresponding array in $_COOKIE. Instead use $_SERVER['HTTP_COOKIE'] as it mirrors the actual HTTP Request headers. – Farhadi Mar 16 '11 at 15:12 ...
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How do you kill all current connections to a SQL Server 2005 database?

...l down under Management to "Activity Monitor" (if you cannot find it there then right click on the database server and select "Activity Monitor"). Opening the Activity Monitor, you can view all process info. You should be able to find the locks for the database you're interested in and kill those lo...
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Static constant string (class member)

...ase) class A { private: static const string RECTANGLE; }; and then // In one of the implementation files const string A::RECTANGLE = "rectangle"; The syntax you were originally trying to use (initializer inside class definition) is only allowed with integral and enum types. Starti...
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How to return a value from __init__ in Python?

... do that? If you want to return some other object when a class is called, then use the __new__() method: class MyClass(object): def __init__(self): print "never called in this case" def __new__(cls): return 42 obj = MyClass() print obj ...
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UICollectionView reloadData not functioning properly in iOS 7

...eloadItemsAtIndexPaths:[self.collectionView indexPathsForVisibleItems]]; then: [self.collectionView reloadData]; share | improve this answer | follow | ...
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Can I set max_retries for requests.request?

...ies=10)) this will work for all http connections. The same with https will then work for all https connections. – user136036 Apr 26 '15 at 19:13 ...