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Is it safe to delete a NULL pointer?

... can be several other pointers pointing to the same object even if you set one to NULL on deletion. – sth Nov 16 '10 at 2:47 13 ...
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How do you configure an OpenFileDialog to select folders?

...ept only folders. Ever since I've seen this I've wanted to know how it's done. I am aware of the FolderBrowserDialog, but I've never really liked that dialog. It starts too small and doesn't let me take advantage of being able to type a path. ...
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Calling the base constructor in C#

... are trying to explain, and you are right. If you have two constructors in one class, you can reference one from the other by using the "this" keyword similarly to how you use "base" when calling the inherited constructor. However, this isn't what the OP asked for so this isn't really the place to a...
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Can anyone explain this strange behavior with signed floats in C#?

...rison of two different, but semantically identical, values. When at least one field is not 8 bytes wide, CanCompareBits returns false, and the code proceeds to use reflection to loop over the fields and call Equals for each value, which correctly treats -0.0 as equal to 0.0. Here is the source for...
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Uppercase Booleans vs. Lowercase in PHP

...--like in java, but to each there own. I'd wish however they'd settle on ONE way and just make us all change over to one or the other!!!!! This isn't a flexibility I really need to have! – Ray Oct 24 '12 at 15:42 ...
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How do I add a simple onClick event handler to a canvas element?

.... This code attaches a click event to the canvas element, and then pushes one shape (called an element in my code) to an elements array. You could add as many as you wish here. The purpose of creating an array of objects is so we can query their properties later. After all the elements have been p...
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What is better, adjacency lists or adjacency matrices for graph problems in C++?

... can anyone provide a link with a clean code for say Breadth first search in linked lists format ?? – magiix Feb 7 '10 at 21:25 ...
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How do I exit a WPF application programmatically?

...nMode is set to OnMainWindowClose. When a user ends a session and the SessionEnding event is either unhandled, or handled without cancellation. Please also note that Application.Current.Shutdown(); may only be called from the thread that created the Application object, i.e. normally the main threa...
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Mongod complains that there is no /data/db folder

...following the get started guide on the mongodb.org up until the step where one creates the /data/db directory. btw, I used the homebrew route. ...
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What are the differences between Generics in C# and Java… and Templates in C++? [closed]

...y, the usual Person p = (Person)foo.get(1); casting-dance still has to be done. The compiler is saving you the key-presses, but the speed hit/casting is still incurred just like it always was. When people mention "Type Erasure" this is what they're talking about. The compiler inserts the casts for y...