[#boost-urls-url_base-clear]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/url_base.adoc[url_base]::clear
:relfileprefix: ../../../
:mrdocs:


Clear the contents while preserving the capacity

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_base.hpp#L166[boost/url/url_base.hpp]>`

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

== Description



=== Postconditions

[,cpp]
----
this->empty() == true
----

=== Complexity

Constant.


=== Exception Safety

No‐throw guarantee.





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