std::forward_list<T,Allocator>::assign_range
From cppreference.com
< cpp | container | forward list
template< container-compatible-range<T> R > void assign_range( R&& rg ); |
(since C++23) (constexpr since C++26) |
|
Replaces elements in the container with a copy of each element in rg.
All iterators (including the end() iterator) and all references to the elements are invalidated.
Each iterator in the range rg is dereferenced exactly once.
If rg overlaps with *this, the behavior is undefined.
Contents |
[edit] Parameters
| rg | - | an input_range with reference type convertible to the element type of the container
|
| Type requirements | ||
| -If std::assignable_from<T&, ranges::range_reference_t<R>> is not modeled, the program is ill-formed. | ||
-If T is not EmplaceConstructible into forward_list from *ranges::begin(rg), the behavior is undefined.
| ||
Notes
| Feature-test macro | Value | Std | Feature |
|---|---|---|---|
__cpp_lib_containers_ranges |
202202L |
(C++23) | Ranges-aware construction and insertion |
[edit] Example
Run this code
#include <algorithm> #include <cassert> #include <forward_list> #include <list> int main() { const auto source = std::list{2, 7, 1}; auto destination = std::forward_list{3, 1, 4}; #ifdef __cpp_lib_containers_ranges destination.assign_range(source); #else destination.assign(source.cbegin(), source.cend()); #endif assert(std::ranges::equal(source, destination)); }
[edit] See also
| (C++23) |
inserts a range of elements after an element (public member function) |
| (C++23) |
adds a range of elements to the beginning (public member function) |
| assigns values to the container (public member function) | |
| assigns values to the container (public member function) |
