[#boost-urls-grammar-delim_rule-02]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/grammar.adoc[grammar]::delim_rule
:relfileprefix: ../../../
:mrdocs:


Match a character literal

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/delim_rule.hpp#L78[boost/url/grammar/delim_rule.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
/* implementation-defined */::xref:boost/urls/grammar/implementation_defined/ch_delim_rule.adoc[ch_delim_rule]
delim_rule(char ch) noexcept;
----

== Description


This matches the specified character.    The value is a reference to the character    in the underlying buffer, expressed as a    `core::string_view`. The function xref:boost/urls/grammar/squelch.adoc[squelch]    may be used to turn this into `void` instead.    If there is no more input, the error code    xref:boost/urls/grammar/error.adoc[error::need_more] is returned.


=== Value Type

[,cpp]
----
using value_type = core::string_view;
----

=== Example

Rules are used with the function xref:boost/urls/grammar/parse-02.adoc[parse].

[,cpp]
----
system::result< core::string_view > rv = parse( ".", delim_rule('.') );
----

=== BNF

[,cpp]
----
char        = %00-FF
----


== Parameters


|===
| Name | Description

| *ch*
| The character to match


|===

== See Also


xref:boost/urls/grammar/parse-02.adoc[parse],        xref:boost/urls/grammar/squelch.adoc[squelch]&period;






[.small]#Created with https://www.mrdocs.com[MrDocs]#