std::ranges:: range_size_t, std::ranges:: range_difference_t, std::ranges:: range_value_t

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C++
Ranges library
Range adaptors
Defined in header <ranges>
template < ranges:: sized_range R >
using range_size_t = decltype ( ranges:: size ( std:: declval < R & > ( ) ) ) ;
(1) (since C++20)
template < ranges:: range R >
using range_difference_t = std:: iter_difference_t < ranges:: iterator_t < R >> ;
(2) (since C++20)
template < ranges:: range R >
using range_value_t = std:: iter_value_t < ranges:: iterator_t < R >> ;
(3) (since C++20)
1) Used to obtain the size type of the sized_range type R .
2) Used to obtain the difference type of the iterator type of range type R .
3) Used to obtain the value type of the iterator type of range type R .

Template parameters

R - a range type or a sized_range type

See also

(C++20) (C++20) (C++23) (C++20) (C++20) (C++20)
computes the associated types of an iterator
(alias template)
(C++20) (C++23) (C++20) (C++23)
obtains iterator and sentinel types of a range
(alias template)
(C++20) (C++23) (C++20) (C++20)
obtains reference types of a range
(alias template)
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