std::ranges::elements_view<V,N>:: reserve_hint
From cppreference.net
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cpp
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ranges
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elements view
C++
Ranges library
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std::ranges::elements_view
| Member functions | ||||
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elements_view::reserve_hint
(C++26)
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| Nested classes | ||||
| Iterator | ||||
| Sentinel | ||||
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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_
)
;
Contents |
Return value
The approximate size of the resulting range.
Notes
| Feature-test macro | Value | Std | Feature |
|---|---|---|---|
__cpp_lib_ranges_reserve_hint
|
202502L
|
(C++26) |
ranges::approximately_sized_range
and
reserve_hint
(1,2)
|
Example
|
This section is incomplete
Reason: no example |
See also
returns the number of elements, provided only if the underlying (adapted) range satisfies
sized_range
(public member function) |