defer.h

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#pragma once
 
#include <utility>
 
namespace emlabcpp
{
 
template < typename Callable >
class defer
{
public:
        defer( Callable f )
          : fun_( std::move( f ) )
        {
        }
 
        defer( defer const& )                = default;
        defer( defer&& ) noexcept            = default;
        defer& operator=( defer const& )     = default;
        defer& operator=( defer&& ) noexcept = default;
 
        ~defer()
        {
                fun_();
        }
 
private:
        Callable fun_;
};
 
}  // namespace emlabcpp