std::ranges::common_view::reserve_hint - cppreference.com (original) (raw)
| 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) |
Equivalent to return ranges::reserve_hint(_[base](../common%5Fview.html#base "cpp/ranges/common view")_ );
[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
[edit] See also
| | returns the number of elements, provided only if the underlying (adapted) range satisfies sized_range (public member function) [edit] | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |