[#bsl-optional-072-transform-068]
= xref:bsl.adoc[bsl]::xref:bsl/optional-072.adoc[optional]::transform
:relfileprefix: ../../
:mrdocs:

Same as the `transform` overload taking `&`.

== Synopsis

Declared in `<bslstl_optional.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_FUNC>
constexpr
auto
transform(t_FUNC&& func) const &;
----


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