constexpr /* see below */ size() const
requires (K == ranges::subrange_kind::sized);
| (since C++20) |
Obtains the number of elements in the subrange.
The return type is the corresponding unsigned version of std::iter_difference_t<I>.
(none).
s_ - i_ explicitly converted to the return type, where i_ and s_ are the stored iterator and sentinel respectively, if the size is not stored.
Otherwise, the stored size.
The size is stored into a subrange if and only if K == ranges::subrange_kind::sized but std::sized_sentinel_for<S, I> is not satisfied.
|
(C++20) | checks whether the subrange is empty (public member function) |
|
(C++17)(C++20) | returns the size of a container or array (function template) |
|
(C++20) | returns an integer equal to the size of a range (customization point object) |
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