Create an Optional_Base with an in‐place constructed value.

Synopsis

Declared in <bslstl_optional.h>

template<class... t_ARGS>
Optional_Base(
    std::allocator_arg_t allocatorArg,
    AllocType allocator,
    std::in_place_t inPlace,
    t_ARGS&&... args);

Parameters

Name

Description

allocatorArg

tag selecting the allocator‐extended constructor

allocator

allocator used to supply memory

inPlace

tag selecting in‐place construction of the contained value

args

arguments forwarded to construct the contained value

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