#include <bslmf_isempty.h>
Inheritance diagram for bsl::Is_Empty_Class_Imp< t_TYPE, IS_CLASS >:
Public Types | |
| typedef t_TYPE | value_type |
| typedef integral_constant | type |
Public Member Functions | |
| BSLS_KEYWORD_CONSTEXPR | operator value_type () const BSLS_KEYWORD_NOEXCEPT |
Static Public Attributes | |
| static BSLS_KEYWORD_CONSTEXPR_MEMBER t_TYPE | value = t_VAL |
Detailed Description
template<class t_TYPE, bool IS_CLASS = sizeof(t_TYPE) == sizeof(Is_Empty_Size)>
struct bsl::Is_Empty_Class_Imp< t_TYPE, IS_CLASS >
Private class: do not use outside of bslmf_isempty component. This meta-function derives from false_type unless (the template parameter) t_TYPE is exactly the same size as a known empty type, in which case the following partial specialization is chosen. This test filters out the majority of problems with union types that are classes, and would produce a hard, non-SFINAEable error trying to a create a derived class to compare size in the next test.
Member Typedef Documentation
template<class t_TYPE, t_TYPE t_VAL>
typedef t_TYPE bsl::integral_constant< t_TYPE, t_VAL >::value_type [inherited] |
template<class t_TYPE, t_TYPE t_VAL>
typedef integral_constant bsl::integral_constant< t_TYPE, t_VAL >::type [inherited] |
Member Function Documentation
template<class t_TYPE, t_TYPE t_VAL>
| BSLS_KEYWORD_CONSTEXPR bsl::integral_constant< t_TYPE, t_VAL >::operator value_type | ( | ) | const [inherited] |
Return t_VAL.
Member Data Documentation
template<class t_TYPE, t_TYPE t_VAL>
BSLS_KEYWORD_CONSTEXPR_MEMBER t_TYPE bsl::integral_constant< t_TYPE, t_VAL >::value = t_VAL [static, inherited] |
The documentation for this struct was generated from the following file:
Generated on Fri Mar 31 2023 13:28:47 for BDE Release 3.115.0.0 Production Release by
1.7.1