[#boost-urls-params_encoded_ref-clear]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/params_encoded_ref.adoc[params&lowbar;encoded&lowbar;ref]::clear
:relfileprefix: ../../../
:mrdocs:

Clear the contents of the container

== Synopsis

Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/params_encoded_ref.hpp#L256[boost&sol;url&sol;params&lowbar;encoded&lowbar;ref&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
clear() noexcept;
----

== Description

All iterators are invalidated&period;

== Effects

[,cpp]
----
this->url().remove_query();
----
== Postconditions

[,cpp]
----
this->empty() == true && this->url().has_query() == false
----
== Complexity

Constant&period;

== Exception Safety

Throws nothing&period;


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