:relfileprefix: ../../../../
[#boost-urls-grammar-lut_chars-2constructor-02]

= xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::xref:boost/urls/grammar.adoc[pass:[grammar]]::xref:boost/urls/grammar/lut_chars.adoc[pass:[lut_chars]]::lut_chars



== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/lut_chars.hpp#L235[boost/url/grammar/lut_chars.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
template<
    class Pred,
    class = void>
constexpr
lut_chars(Pred const& pred) noexcept;
----