Create an Optional_Base object whose contained value is initialized from the specified il and args.

Synopsis

Declared in <bslstl_optional.h>

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

Description

Use the specified allocator to supply memory.

contained value value

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

il

initializer list forwarded to construct the contained value

args

arguments forwarded to construct the contained value

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