[#SourceLocationHasher-operator_call]
= xref:SourceLocationHasher.adoc[SourceLocationHasher]::operator()
:relfileprefix: ../
:mrdocs:

Compute a hash of a source location&period;

== Synopsis

Declared in `&lt;logging&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
size&lowbar;t
operator()(xref:SourceLocation.adoc[SourceLocation] const& s) const noexcept;
----

== Return Value

A hash value derived from the line and file name&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *s*
| The source location to hash&period;
|===


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