std::ranges::drop_view<V>::reserve_hint
From cppreference.com
| constexpr auto reserve_hint() requires ranges::approximately_sized_range<V> |
(1) | (since C++26) |
| constexpr auto reserve_hint() const requires ranges::approximately_sized_range<const V> |
(2) | (since C++26) |
Let W be V for overload (1) or const V for overload (2). Equivalent to
const auto s = static_cast<ranges::range_difference_t<W>>(ranges::reserve_hint(base_));
return to-unsigned-like(s < count_ ? 0 : s - count_);
Contents |
[edit] Return value
The approximate size of the resulting range.
[edit] Notes
| Feature-test macro | Value | Std | Feature |
|---|---|---|---|
__cpp_lib_ranges_reserve_hint |
202502L |
(C++26) | ranges::approximately_sized_range and reserve_hint (1,2)
|
[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
returns the number of elements, provided only if the underlying (adapted) range satisfies sized_range (public member function) |
