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Merge pull request #16 from jfalcou/enable_if_has_type

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Added enable_if_has_type facility.
This commit is contained in:
Andrey Semashev
2015-08-15 14:03:19 +03:00
parent 4268048ab8 87d43ddffc
commit a30186cfa4
3 changed files with 53 additions and 1 deletions
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9
include/boost/core/enable_if.hpp
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@@ -23,6 +23,11 @@
namespace boost
{
template<typename T, typename R=void>
struct enable_if_has_type
{
typedef R type;
};
template <bool B, class T = void>
struct enable_if_c {
@@ -80,6 +85,10 @@ namespace boost {
template <typename T>
struct enable_if_does_not_work_on_this_compiler;
template<typename T, typename R=void>
struct enable_if_has_type : enable_if_does_not_work_on_this_compiler<T>
{ };
template <bool B, class T = detail::enable_if_default_T>
struct enable_if_c : enable_if_does_not_work_on_this_compiler<T>
{ };