object::operator=

## `object::operator=`

Assignment operators.

### Synopsis

    object&
    operator=(
        object const& other); (1)

    object&
    operator=(
        object&& other); (2)

    object&
    operator=(
        std::initializer_list< std::pair< string_view, value_ref > > init); (3)

### Description

Replaces the contents of this object.

- (1) replaces with the copies of the elements of `other`.

- (2) takes ownership of `other`'s element storage if `*storage() == *other.storage()`; otherwise equivalent to (1).

- (3) replaces with the elements of `init`.

### Complexity

- (1) linear in `size() + other.size()`.

- (2) constant if `*storage() == *other.storage()`; otherwise linear in `size() + other.size()`.

- (3) average case linear in `size() + init.size()`, worst case quadratic in `init.size()`.

### Exception Safety

- (1), (3) strong guarantee.

- (2) no-throw guarantee if `*storage() == *other.storage()`; otherwise strong guarantee.

Calls to `memory_resource::allocate` may throw.

### Complexity

### Parameters

Name | Description
--- | ---
`other` | Another object.
`init` | The initializer list to copy.

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