:relfileprefix: ../../../
[#boost-urls-grammar-ci_digest]

= xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::xref:boost/urls/grammar.adoc[pass:[grammar]]::ci_digest


Return the case-insensitive digest of a string


== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/ci_string.hpp#L140[boost/url/grammar/ci_string.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
xref:std.adoc[std]::size_t
ci_digest(core::string_view s) noexcept;
----

== Description


The hash function is non-cryptographic and
not hardened against algorithmic complexity
attacks.
Returned digests are suitable for usage in
unordered containers.
The function is defined only for strings
containing low-ASCII characters.




== Return Value


The digest



== Parameters

|===
| Name | Description 

| *s*
| 
The string

|===