Constructors

Synopses

Declared in <bslstl_optional.h>

Create an empty Optional_DataImp object.

Optional_DataImp() noexcept;

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Create an Optional_DataImp object, which contains the result of invocation of the specified invocable with the specified arg.

template<
    class t_INVOCABLE,
    class t_ARG>
Optional_DataImp(
    Optional_InvokeConstructorTag tag,
    t_INVOCABLE&& invocable,
    t_ARG&& arg);

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Parameters

Name

Description

tag

tag selecting this constructor overload

invocable

callable invoked to produce the contained value

arg

argument forwarded to construct the contained value

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