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Questions tagged [function-pointers]

A function pointer is a pointer to a function, which can be stored in a variable. It allows a run-time choice of which function to run.

In programming languages like C, function pointers can be used to simplify code by providing a simple way to select a function to execute based on run-time values.

Many "pure" object-oriented languages do not support function pointers. Something similar can be implemented in these kinds of languages, though, using references to interfaces that define a single member function. Microsoft .NET languages such as C# and Visual Basic .NET implement type-safe function pointers with delegates.

In other languages that support first-class functions, functions are regarded as data, and can be passed, returned, and created dynamically directly by other functions, eliminating the need for function pointers.

(Source: Wikipedia)

Popular Questions

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Consider this javascript code: var bar = function () { alert("A"); } var foo = bar; bar = function () { alert("B"); }; foo(); When running this code I get "A". Is this behavior a part of javascript specification and can I rely on it?
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