[#beman-optional-optional-03-const_iterator] = xref:beman.adoc[beman]::xref:beman/optional.adoc[optional]::xref:beman/optional/optional-03.adoc[optional]::const_iterator :relfileprefix: ../../../ :mrdocs: Type alias for the const iterator type of the optional. == Synopsis Declared in `<beman/optional/optional.hpp>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- using const_iterator = /* implementation-defined */::contiguous_iterator<T const, optional>; ---- == Description Since P3168R2: Give std::optional Range Support. [.small]#Created with https://www.mrdocs.com[MrDocs]#