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


== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/range_rule.hpp#L381[boost/url/grammar/range_rule.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<xref:boost/urls/grammar/Rule.adoc[Rule] R>
constexpr
/* implementation-defined */::xref:boost/urls/grammar/implementation_defined/range_rule_t.adoc[range_rule_t]<R>
xref:boost/urls/grammar/range_rule-00.adoc[range_rule](
    R const& next,
    std::size_t N = 0,
    std::size_t M = std::size_t(‐1)) noexcept;
----

[.small]#xref:boost/urls/grammar/range_rule-00.adoc[_» more..._]#

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    xref:boost/urls/grammar/Rule.adoc[Rule] R1,
    xref:boost/urls/grammar/Rule.adoc[Rule] R2>
constexpr
/* implementation-defined */::xref:boost/urls/grammar/implementation_defined/range_rule_t.adoc[range_rule_t]<R1, R2>
xref:boost/urls/grammar/range_rule-06.adoc[range_rule](
    R1 const& first,
    R2 const& next,
    std::size_t N = 0,
    std::size_t M = std::size_t(‐1)) noexcept
requires ! std::is_integral<R2>::value;
----

[.small]#xref:boost/urls/grammar/range_rule-06.adoc[_» more..._]#

== Parameters


|===
| Name | Description

| *next*
| The rule to use for matching    each element. The range extends until this    rule returns an error.


| *N*
| The minimum number of elements for    the range to be valid. If omitted, this    defaults to zero.


| *M*
| The maximum number of elements for    the range to be valid. If omitted, this    defaults to unlimited.


| *first*
| The rule to use for matching    the first element. If this rule returns    an error, the range is empty.


|===



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