[#boost-urls-url_view_base-digest]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/url_view_base.adoc[url_view_base]::digest
:relfileprefix: ../../../
:mrdocs:


Calculate a hash of the url

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_view_base.hpp#L129[boost/url/url_view_base.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::size_t
digest(std::size_t salt = 0) const noexcept;
----

== Description


This function calculates a hash of the        url as if it were always normalized.


=== Complexity

Linear in `this‐>size()`.


=== Exception Safety

Throws nothing.



== Return Value


A hash value suitable for use        in hash‐based containers.



== Parameters


|===
| Name | Description

| *salt*
| An initial value to add to        the hash


|===



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