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      std::flat_multiset<Key,Compare,KeyContainer>::operator=

      From cppreference.com
      <cpp‎ |container‎ |flat multiset

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      std::flat_multiset
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      flat_multiset& operator=(const flat_multiset& other);
      (1)(since C++23)
      (implicitly declared)
      flat_multiset& operator=( flat_multiset&& other);
      (2)(since C++23)
      (implicitly declared)
      flat_multiset& operator=(std::initializer_list<key_type> ilist);
      (3)(since C++23)

      Replaces the contents of the container adaptor with the contents of given argument.

      1) Copy assignment operator. Replaces the contents with a copy of the contents ofother. Effectively callsc= other.c; comp= other.comp;.
      2) Move assignment operator. Replaces the contents with those ofother using move semantics. Effectively callsc= std::move(other.c); comp= std::move(other.comp);.
      3) Replaces the contents with those identified by initializer listilist.

      Contents

      [edit]Parameters

      other - another container adaptor to be used as source
      ilist - initializer list to be used as source

      [edit]Return value

      *this

      [edit]Complexity

      1,2) Equivalent to that ofoperator= of the underlyingcontainer.
      3) Linear in the size of*this andilist.

      [edit]Example

      Run this code
      #include <flat_set>#include <initializer_list>#include <print> int main(){std::flat_multiset<int> x{1,2,3}, y, z;constauto w={4,5,6,7}; std::println("Initially:");std::println("x = {}", x);std::println("y = {}", y);std::println("z = {}", z);     y= x;// overload (1)std::println("Copy assignment copies data from x to y:");std::println("x = {}", x);std::println("y = {}", y);     z= std::move(x);// overload (2)std::println("Move assignment moves data from x to z, modifying both x and z:");std::println("x = {}", x);std::println("z = {}", z);     z= w;// overload (3)std::println("Assignment of initializer_list w to z:");std::println("w = {}", w);std::println("z = {}", z);}

      Output:

      Initially:x = {1, 2, 3}y = {}z = {}Copy assignment copies data from x to y:x = {1, 2, 3}y = {1, 2, 3}Move assignment moves data from x to z, modifying both x and z:x = {}z = {1, 2, 3}Assignment of initializer_list w to z:w = {4, 5, 6, 7}z = {4, 5, 6, 7}

      [edit]See also

      constructs theflat_multiset
      (public member function)[edit]
      replaces the underlying container
      (public member function)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/container/flat_multiset/operator%3D&oldid=169510"

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