[#BloombergLP-bslfmt-basic_format_arg-05-2conversion]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::xref:BloombergLP/bslfmt/basic_format_arg-05.adoc[basic&lowbar;format&lowbar;arg&lt;basic&lowbar;format&lowbar;context&lt;t&lowbar;OUT, t&lowbar;CHAR&gt;&gt;]::operator xref:BloombergLP/bslfmt/basic_format_arg-05/BoolType.adoc[BoolType]
:relfileprefix: ../../../
:mrdocs:

Return whether this object holds a value&period;

== Synopsis

Declared in `&lt;bslfmt&lowbar;format&lowbar;arg&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
operator xref:BloombergLP/bslfmt/basic_format_arg-05/BoolType.adoc[BoolType]() const noexcept;
----

== Return Value

unspecified bool that is `true` if this holds a value


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