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std::ranges::common_range(3) C++ Standard Libary std::ranges::common_range(3)

NAME

std::ranges::common_range - std::ranges::common_range

Synopsis


Defined in header <ranges>
template< class T >


concept common_range = (since C++20)


ranges::range<T> && std::same_as<ranges::iterator_t<T>,
ranges::sentinel_t<T>>;


The common_range concept is a refinement of range for which std::ranges::begin() and
std::ranges::end() return the same type (e.g. all standard library containers).

Example

// Run this code


#include <ranges>


struct A {
char* begin();
char* end();
};
static_assert( std::ranges::common_range<A> );


struct B {
char* begin();
bool end();
}; // not a common_range: begin/end have different types
static_assert( not std::ranges::common_range<B> );


struct C {
char* begin();
}; // not a common_range, not even a range: has no end()
static_assert( not std::ranges::common_range<C> );


int main() { }

See also


ranges::common_view converts a view into a common_range
views::common (class template) (range adaptor object)
(C++20)

2024.06.10 http://cppreference.com