:relfileprefix: ../../../../
[#boost-urls-grammar-recycled_ptr-empty]

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


Return true if this does not reference an object


=== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/recycled.hpp#L418[boost/url/grammar/recycled.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
bool
empty() const noexcept;
----

=== Description


=== Throws nothing.