Constructors
Declared in <bslstl_variant.h>
Create a Variant_Base object holding the 0th alternative, which is value-initialized.
Variant_Base();
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Create a Variant_Base object holding the same alternative (if any) as the specified original object.
Variant_Base(Variant_Base const& original);
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Create a Variant_Base object holding the same alternative (if any) held by the specified original.
Variant_Base(Variant_Base&& original);
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Create a Variant_Base object whose index is the specified index without constructing an alternative object.
Variant_Base(
Variant_ConstructFromStdTag fromStdTag,
size_t index);
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Create a Variant_Base object holding the 0th alternative, which is value-initialized.
Variant_Base(
std::allocator_arg_t allocatorArg,
allocator_type allocator);
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Create a Variant_Base object holding the alternative with index (template parameter) t_INDEX, direct-initialized from the specified args.
template<
size_t t_INDEX,
class... t_ARGS>
explicit
Variant_Base(
bsl::in_place_index_t<t_INDEX> inPlaceIndex,
t_ARGS&&... args);
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Create a Variant_Base object holding the same alternative (if any) held by the specified original object.
Variant_Base(
std::allocator_arg_t allocatorArg,
allocator_type allocator,
Variant const& original);
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See the corresponding copy constructor above.
Variant_Base(
std::allocator_arg_t allocatorArg,
allocator_type allocator,
Variant&& original);
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Create a Variant_Base object whose index is the specified index without constructing an alternative object.
Variant_Base(
std::allocator_arg_t allocatorArg,
allocator_type allocator,
Variant_ConstructFromStdTag fromStdTag,
size_t index);
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Create a Variant_Base object holding the alternative with index (template parameter) t_INDEX, direct-initialized from the specified args.
template<
size_t t_INDEX,
class... t_ARGS>
explicit
Variant_Base(
std::allocator_arg_t allocatorArg,
allocator_type allocator,
bsl::in_place_index_t<t_INDEX> inPlaceIndex,
t_ARGS&&... args);
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| Name | Description |
|---|---|
| original | object to copy |
| fromStdTag | tag selecting this indexless construction overload |
| index | index of the alternative that will (later) be created |
| allocatorArg | tag selecting the allocator-extended overload |
| allocator | allocator used to supply memory |
| inPlaceIndex | tag selecting the in-place-index constructor |
| args | arguments forwarded to the alternative's constructor |