std::flat_multiset<Key,Compare,KeyContainer>::insert_range
From cppreference.com
< cpp | container | flat multiset
| template< container-compatible-range<value_type> R > void insert_range( R&& rg ); |
(since C++23) | |
Inserts a copy of each element in the range rg into underlying container c as if by:
for (const auto& e : rg) c.insert(c.end(), e);
Then, sorts the range of newly inserted elements with respect to compare.
Merges the resulting sorted range and the sorted range of pre-existing elements into a single sorted range.
Each iterator in the range rg is dereferenced exactly once. The behavior is undefined if rg overlaps with the container.
| Information on iterator invalidation is copied from here |
Contents |
Parameters
| rg | - | a container compatible range, that is, an input_range whose elements are convertible to T
|
Return value
(none)
Complexity
N + M·log(M), where N is size() before the operation and M is ranges::distance(rg).
Notes
Since insert_range performs an in-place merge operation, that may allocate memory.
Example
Run this code
#include <iostream> #include <flat_set> void println(auto, auto const& container) { for (const auto& elem : container) std::cout << elem << ' '; std::cout << '\n'; } int main() { auto container = std::flat_multiset{1, 3, 2, 4}; const auto rg = {-1, 3, -2}; #ifdef __cpp_lib_containers_ranges container.insert_range(rg); #else container.insert(rg.begin(), rg.end()); #endif println("{}", container); }
Output:
-2 -1 1 2 3 3 4
See also
| inserts elements (public member function) |
