[#boost-urls-param_pct_view-2constructor-00]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/param_pct_view.adoc[param&lowbar;pct&lowbar;view]::param&lowbar;pct&lowbar;view
:relfileprefix: ../../../
:mrdocs:


Constructor

== Synopsis


Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/param.hpp#L697[boost&sol;url&sol;param&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
param&lowbar;pct&lowbar;view() = default;
----

== Description


Default constructed query parameters        have an empty key and no value&period;


=== Example

[,cpp]
----
param_pct_view qp;
----

=== Postconditions

[,cpp]
----
this->key == "" && this->value == "" && this->has_value == false
----

=== Complexity

Constant&period;


=== Exception Safety

Throws nothing&period;





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