:relfileprefix: ../../../
[#boost-urls-param_view-has_value]

= xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::xref:boost/urls/param_view.adoc[pass:[param_view]]::has_value


True if a value is present


== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/param.hpp#L430[boost/url/param.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
bool has_value = false;
----

== Description


The presence of a value is indicated by
`has_value &equals;&equals; true`.
An empty value is distinct from no value.