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Showing content from https://en.cppreference.com/w/cpp/algorithm/../../cpp/container/inplace_vector/operator=.html below:

std::inplace_vector<T,N>::operator= - cppreference.com

constexpr inplace_vector& operator=( const inplace_vector& other );

(1) (since C++26)

constexpr inplace_vector& operator=( inplace_vector&& other ) noexcept(/* see below */);

(2) (since C++26) (3) (since C++26)

Replaces the contents of the inplace_vector.

3) Replaces the contents with those identified by initializer list init.

[edit] Parameters other - another inplace_vector to be used as source to initialize the elements of the container with init - initializer list to initialize the elements of the container with [edit] Complexity

1,2) Linear in the size of *this and other.

3) Linear in the size of *this and init.

[edit] Exceptions [edit] Example

#include <initializer_list>
#include <inplace_vector>
#include <new>
#include <print>
#include <ranges>
#include <string>
 
int main()
{
    std::inplace_vector<int, 4> x({1, 2, 3}), y;
    std::println("Initially:");
    std::println("x = {}", x);
    std::println("y = {}", y);
 
    std::println("Copy assignment copies data from x to y:");
    y = x; // overload (1)
    std::println("x = {}", x);
    std::println("y = {}", y);
 
    std::inplace_vector<std::string, 3> z, w{"\N{CAT}", "\N{GREEN HEART}"};
    std::println("Initially:");
    std::println("z = {}", z);
    std::println("w = {}", w);
 
    std::println("Move assignment moves data from w to z:");
    z = std::move(w); // overload (2)
    std::println("z = {}", z);
    std::println("w = {}", w); // w is in valid but unspecified state
 
    auto l = {4, 5, 6, 7};
    std::println("Assignment of initializer_list {} to x:", l);
    x = l; // overload (3)
    std::println("x = {}", x);
 
    std::println("Assignment of initializer_list with size bigger than N throws:");
    try
    {
        x = {1, 2, 3, 4, 5}; // throws: (initializer list size == 5) > (capacity N == 4)
    }
    catch(const std::bad_alloc& ex)
    {
        std::println("ex.what(): {}", ex.what());
    }
}

Possible output:

Initially:
x = [1, 2, 3]
y = []
Copy assignment copies data from x to y:
x = [1, 2, 3]
y = [1, 2, 3]
Initially:
z = []
w = ["ð", "ð"]
Move assignment moves data from w to z:
z = ["ð", "ð"]
w = ["", ""]
Assignment of initializer_list [4, 5, 6, 7] to x:
x = [4, 5, 6, 7]
Assignment of initializer_list with size bigger than N throws:
ex.what(): std::bad_alloc

[edit] See also

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