[#boost-urls-param_pct_view-has_value]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/param_pct_view.adoc[param&lowbar;pct&lowbar;view]::has&lowbar;value
:relfileprefix: ../../../
:mrdocs:

True if a value is present

== Synopsis

Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/param.hpp#Lundefined[boost&sol;url&sol;param&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool has&lowbar;value = false;
----

== Description

The presence of a value is indicated by `has&lowbar;value &equals;&equals; true`&period; An empty value is distinct from no value&period;


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