[#BloombergLP-bslstl-Optional_Base-08-2constructor-0c]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Optional_Base-08.adoc[Optional_Base<t_TYPE, false>]::Optional_Base
:relfileprefix: ../../../
:mrdocs:

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

== Synopsis

Declared in `<bslstl_optional.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_INVOCABLE,
    class t_ARG>
Optional_Base(
    xref:BloombergLP/bslstl/Optional_InvokeConstructorTag.adoc[Optional_InvokeConstructorTag],
    t_INVOCABLE&& invocable,
    t_ARG&& arg);
----


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