[#boost-urls-param-has_value]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/param.adoc[param]::has_value
:relfileprefix: ../../../
:mrdocs:


True if a value is present

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/param.hpp#L101[boost/url/param.hpp]>`

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

== Description


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





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