std::ranges::chunk_view<V>::size
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< cpp | ranges | chunk view
constexpr auto size() requires ranges::sized_range<V>; |
(1) | (since C++23) |
constexpr auto size() const requires ranges::sized_range<const V>; |
(2) | (since C++23) |
Returns the number of elements, which is the smallest integer value that is not less than the quotient of dividing the size of underlying view base_
by the underlying data member n_
, that holds the number passed to the constructor (0 if default constructed). Equivalent to
return __to_unsigned_like(__div_ceil(ranges::distance(base_), n_));
Contents |
[edit] Parameters
(none)
[edit] Return value
The number of elements.
[edit] Example
Run this code
#include <ranges> int main() { constexpr static auto v = {1, 2, 3, 4, 5}; constexpr auto w{ std::ranges::chunk_view(v, 2) }; static_assert(w.size() == (5 / 2 + (5 % 2 ? 1 : 0))); }
[edit] See also
(C++20) |
returns an integer equal to the size of a range (customization point object) |
(C++20) |
returns a signed integer equal to the size of a range (customization point object) |