bsl::variant

Synopsis

Declared in <bslstl_variant.h>

template<
    class t_HEAD,
    class... t_TAIL>
class variant;

Name	Description
`allocator_type`	Type alias to the allocator type used by `variant`.

Name	Description
`variant` [constructor]	Constructors
`operator=`	Assignment operators
`emplace`	`emplace` overloads
`get_allocator`	Return a copy of this object's allocator.
`index`	Return the index of the currently managed alternative.
`swap`	Efficiently exchange the value of this object with `other`'s value.
`valueless_by_exception`	Return `true` if this object is valueless by exception.
`operator BloombergLP::bslmf::NestedTraitDeclaration<variant, IsBitwiseMoveable, (BloombergLP::bslstl::Variant_IsBitwiseMoveableAll<t_HEAD, t_TAIL...>::value)>`	Nested trait declaration for `IsBitwiseMoveable`.
`operator BloombergLP::bslmf::NestedTraitDeclaration<variant, UsesAllocatorArgT, (BloombergLP::bslstl::Variant_UsesBslmaAllocatorAny<t_HEAD, t_TAIL...>::value)>`	Nested trait declaration for `UsesAllocatorArgT`.
`operator BloombergLP::bslmf::NestedTraitDeclaration<variant, UsesBslmaAllocator, (BloombergLP::bslstl::Variant_UsesBslmaAllocatorAny<t_HEAD, t_TAIL...>::value)>`	Nested trait declaration for `UsesBslmaAllocator`.

Name	Description
`BloombergLP::bslstl::Variant_Base`	Define the data representation and special member functions of `bsl::variant`.

Name	Description
`get`	See the first `get` overload above.
`get`	See the first `get` overload above.
`get`	See the first `get` overload above.
`get`	Return a reference to the alternative at index `t_INDEX` in `obj`.
`get`	See the first `get` overload above.
`get`	See the first `get` overload above.
`get`	Return a reference to the alternative of type `t_TYPE` in `obj`.
`get`	See the first `get` overload above.
`get_if`	Return a pointer to the `t_TYPE` alternative in `obj` if active.
`get_if`	Return a pointer to the `t_TYPE` alternative in `obj` if active.
`get_if`	Return a pointer to the alternative at index `t_INDEX`, or null.
`get_if`	Return a pointer to the alternative at index `t_INDEX` in `obj`, or null.
`holds_alternative`	Return `true` if `obj` currently holds the `t_TYPE` alternative.
`operator!=`	Return `true` if `lhs` and `rhs` are not equal.
`operator<`	Return `true` if `lhs` is less than `rhs`.
`operator<=`	Return `true` if `lhs` is less than or equal to `rhs`.
`operator<=>`	Return the three-way comparison result of `lhs` and `rhs`.
`operator==`	Return `true` if `lhs` and `rhs` are equal.
`operator>`	Return `true` if `lhs` is greater than `rhs`.
`operator>=`	Return `true` if `lhs` is greater than or equal to `rhs`.
`swap`	Efficiently exchange the values of the specified `lhs` and `rhs` objects.