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Difference between virtual and abstract methods [duplicate]

...n implementation and provide the derived classes with the option of overriding it. Abstract methods do not provide an implementation and force the derived classes to override the method. So, abstract methods have no actual code in them, and subclasses HAVE TO override the method. Virtual methods c...
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How do I list the symbols in a .so file

How do I list the symbols being exported from a .so file? If possible, I'd also like to know their source (e.g. if they are pulled in from a static library). ...
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Detect application heap size in Android

... There are two ways to think about your phrase "application heap size available": How much heap can my app use before a hard error is triggered? And How much heap should my app use, given the constraints of the Android OS version and hardware of t...
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Curious null-coalescing operator custom implicit conversion behaviour

Note: this appears to have been fixed in Roslyn 5 Answers 5 ...
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Understanding repr( ) function in Python

repr() : evaluatable string representation of an object (can "eval()" it, meaning it is a string representation that evaluates to a Python object) ...
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Multiple “order by” in LINQ

... Thanks for the answer of course... But instead of Var movies = _db.Movies.Orderby(c => c.Category).ThenBy(n => n.Name) if I use Var movies = _db.Movies.Orderby(c => c.Category).OrderBy(n => n.Name) 2 times "orderBy" why is the result different...
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Eclipse: enable assertions

I'm running Eclipse Galileo. How do I enable assertions in Eclipse? 5 Answers 5 ...
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What's the opposite of 'make install', i.e. how do you uninstall a library in Linux?

While running 11 Answers 11 ...
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PHP date() format when inserting into datetime in MySQL

What is the correct format to pass to the date() function in PHP if I want to insert the result into a MySQL datetime type column? ...
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Javascript/jQuery: Set Values (Selection) in a multiple Select

... Iterate through the loop using the value in a dynamic selector that utilizes the attribute selector. var values="Test,Prof,Off"; $.each(values.split(","), function(i,e){ $("#strings option[value='" + e + "']").prop("selected", true); }); Working...