Create a Variant_Base object whose index is the specified index without constructing an alternative object. If this Variant_Base is allocator‐aware, the specified allocator is used to supply memory.

Synopsis

Declared in <bslstl_variant.h>

Variant_Base(
    std::allocator_arg_t,
    allocator_type allocator,
    Variant_ConstructFromStdTag,
    size_t index);

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