[#boost-urls-grammar-ci_is_equal-0a]
= xref:boost/urls/grammar/ci_is_equal-0a.adoc[boost::urls::grammar::ci_is_equal]
:relfileprefix: ../../../
:mrdocs:

Return true if s0 equals s1 using case‐insensitive comparison

== Synopsis

Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/ci_string.hpp#L164[boost/url/grammar/ci_string.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class String0,
    class String1>
bool
ci_is_equal(
    String0 const& s0,
    String1 const& s1)
requires ! std::is_convertible<
                String0, core::string_view>::value ||
            ! std::is_convertible<
                String1, core::string_view>::value;
----

== Description

The function is defined only for strings containing low‐ASCII characters.

== Example
[,cpp]
----
assert( ci_is_equal( "Boost", "boost" ) );
----
== Return Value

`true` if `s0` case‐insensitively equals `s1`, otherwise `false`

== Parameters

[cols=2]
|===
| Name
| Description
| *s0*
| The first string
| *s1*
| The second string
|===

== See Also

xref:boost/urls/grammar/ci_compare.adoc[`ci_compare`], xref:boost/urls/grammar/ci_is_less.adoc[`ci_is_less`].


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