Meta‐function for detecting implicit convertibility between types.

Synopsis

Declared in <bslmf_isconvertible.h>

template<
    class t_FROM_TYPE,
    class t_TO_TYPE>
struct is_convertible
    : bsl::integral_constant<bool, ::std::is_convertible<typename BloombergLP::bslmf::IsConvertible_CheckComplete<t_FROM_TYPE>::type, typename BloombergLP::bslmf::IsConvertible_CheckComplete<t_TO_TYPE>::type>::value>

Description

This struct template implements the is_convertible meta‐function defined in the C++11 standard to determine whether the (template parameter) t_FROM_TYPE is implicitly convertible to the (template parameter) t_TO_TYPE.

Base Classes

Name

Description

bsl::integral_constant<bool, ::std::is_convertible<typename BloombergLP::bslmf::IsConvertible_CheckComplete<t_FROM_TYPE>::type, typename BloombergLP::bslmf::IsConvertible_CheckComplete<t_TO_TYPE>::type>::value>

Metafunction representing a compile‐time constant of the specified (template parameter) t_TYPE with the specified (template parameter) t_VALUE.

Type Aliases

Name

Description

type

Alias for this integral_constant specialization.

value_type

Alias for the (template parameter) t_TYPE.

Member Functions

Name

Description

operator()

Return a copy of the template argument t_VALUE.

operator t_TYPE

Return a copy of the template argument t_VALUE.

Static Data Members

Name

Description

value

The compile‐time constant value of this metafunction.

Derived Classes

Name

Description

IsConvertibleToCString

This struct template implements a meta‐function to determine if the (template parameter) t_TYPE is convertible to const t_CHAR_TYPE *.

IsConvertibleToStringView

Meta‐function for detecting types convertible to a string view.

UsesBslmaAllocator<bsl::basic_string<CHAR_TYPE, CHAR_TRAITS, ALLOC>>

Trait indicating basic_string uses bslma allocators.

UsesBslmaAllocator<bsl::map<KEY, VALUE, COMPARATOR, ALLOCATOR>>

Trait indicating bsl::map uses bslma allocators when ALLOCATOR allows.

UsesBslmaAllocator<bsl::hash_set<_Value, _HashFcn, _EqualKey, _Alloc>>

Trait indicating hash_set uses bslma allocators when _Alloc allows.

UsesBslmaAllocator<bsl::hash_multimap<_Key, _Tp, _HashFcn, _EqualKey, _Alloc>>

Trait indicating hash_multimap uses bslma allocators when _Alloc allows.

UsesBslmaAllocator<bsl::list<VALUE, ALLOCATOR>>

Trait indicating bsl::list uses bslma allocators when ALLOCATOR allows.

UsesBslmaAllocator<bsl::set<KEY, COMPARATOR, ALLOCATOR>>

Trait indicating bsl::set uses bslma allocators when ALLOCATOR allows.

UsesBslmaAllocator<bsl::deque<VALUE_TYPE, ALLOCATOR>>

Trait indicating deque uses bslma allocators when ALLOCATOR allows.

UsesBslmaAllocator<bsl::multimap<KEY, VALUE, COMPARATOR, ALLOCATOR>>

Trait indicating bsl::multimap uses bslma allocators when ALLOCATOR allows.

UsesBslmaAllocator<bsl::hash_multiset<_Value, _HashFcn, _EqualKey, _Alloc>>

Trait indicating hash_multiset uses bslma allocators when _Alloc allows.

UsesBslmaAllocator<bsl::hash_map<_Key, _Tp, _HashFcn, _EqualKey, _Alloc>>

Trait indicating hash_map uses bslma allocators when _Alloc allows.

UsesBslmaAllocator<bsl::multiset<KEY, COMPARATOR, ALLOCATOR>>

Trait indicating bsl::multiset uses bslma allocators.

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