:relfileprefix: ../../../
[#9BA3F0699169A2ABEFE19925B9BE45C03E2430D5]

= param::has_value

pass:v,q[True if a value is present]


== Synopsis

Declared in header `</boost/url/param.hpp#L101[boost/url/param.hpp,window=blank_]>`

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

== Description

pass:v,q[The presence of a value is indicated by] pass:v,q[`has_value == true`.]
pass:v,q[An empty value is distinct from no value.]