[#boost-urls-param_view-has_value]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/param_view.adoc[param&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#L434[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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