Function< R, T1, T2 > Struct Template Reference

Detailed Description

template<class R, class T1 = NoType, class T2 = NoType>
struct asl::Function< R, T1, T2 >

A simple function object that can wrap a function pointer, a functor or a lambda.

The first parameter is the return type, which can be void, and the rest, if given, are argument types. Currently supports up to 2 arguments.

In C++11 you can do this (in older C++ you would assign a function pointer or a class object implementing operator()):

Function<bool, int> isEven = [=](int x) { return x % 2 == 0; };
 
bool sixeven = isEven(6);

A default constructed Function object is null and cannot be invoked. You can check if the function has been initialized with the bool conversion:

if (function)
    function(a, b);

Be aware that currently Function objects copied invalidate the source object. This might change in the future.

#include <util.h>

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The documentation for this struct was generated from the following file:

• util.h