decay

template <class T>
struct decay
{
   typedef see-below type;
};

type: Let U be the result of remove_reference<T>::type, then if U is an array type, the result is remove_extent<U>::type*, otherwise if U is a function type then the result is U*, otherwise the result is U.

C++ Standard Reference: 3.9.1.

Header: #include <boost/type_traits/decay.hpp> or #include <boost/type_traits.hpp>

Table 1.17. Examples

Expression	Result Type
`decay<int[2][3]>::type`	`int[3]*`
`decay<int(&)[2]>::type`	`int*`
`decay<int(&)(double)>::type`	`int(*)(double)`
`int(*)(double)`	`int(*)(double)`
`int(double)`	`int(*)(double)`

Boost C++ Libraries

decay