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std::experimental::ranges::next(3) C++ Standard Libary std::experimental::ranges::next(3)


std::experimental::ranges::next - std::experimental::ranges::next


Defined in header <experimental/ranges/iterator>
namespace {
(ranges TS)
constexpr /* unspecified */ next = /* unspecified */; (customization point
Call signature
template< Iterator I > (1)
constexpr I next(I i);
template< Iterator I > (2)
constexpr I next(I i, ranges::difference_type_t<I> n);
template< Iterator I, Sentinel<I> S > (3)
constexpr I next(I i, S bound);
template< Iterator I, Sentinel<I> S >
constexpr I next(I i, ranges::difference_type_t<I> n, S (4)

Advances the iterator i n times, or until bound is reached, whichever comes first,
and returns the advanced iterator.

1) Equivalent to ++i; return i;.
2) Equivalent to ranges::advance(i, n); return i;.
3) Equivalent to ranges::advance(i, bound); return i;.
4) Equivalent to ranges::advance(i, n, bound); return i;.

Customization point objects

The name ranges::next denotes a customization point object, which is a function
object of a literal Semiregular class type (denoted, for exposition purposes, as
NextT). All instances of NextT are equal. Thus, ranges::next can be copied freely
and its copies can be used interchangeably.

Given a set of types Args..., if std::declval<Args>()... meet the requirements for
arguments to ranges::next above, NextT will satisfy ranges::Invocable<const NextT,
Args...>. Otherwise, no function call operator of NextT participates in overload

In every translation unit in which ranges::next is defined, it refers to the same
instance of the customization point object. (This means that it can be used freely
in things like inline functions and function templates without violating the
one-definition rule.)

Return value

The advanced iterator.


Even though omitting n for overload (2) behaves as if n is 1, omitting n for
overload (4) effectively behaves as if n is infinity (always advance to bound).


This section is incomplete
Reason: no example

See also

next increment an iterator
(C++11) (function template)
advance advances an iterator by given distance
(function template)
prev decrement an iterator
(function template)
returns the distance between an iterator and a sentinel, or between the
distance beginning and the end of a range
(function template)