[any.assign]

# 22 General utilities library [[utilities]](./#utilities)

## 22.7 Storage for any type [[any]](any#assign)

### 22.7.4 Class any [[any.class]](any.class#any.assign)

#### 22.7.4.3 Assignment [any.assign]

[ð](#lib:operator=,any)

`any& operator=(const any& rhs);
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7315)

*Effects*: As if by any(rhs).swap(*this)[.](#1.sentence-1)

No effects if an exception is thrown[.](#1.sentence-2)

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7320)

*Returns*: *this[.](#2.sentence-1)

[3](#3)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7324)

*Throws*: Any exceptions arising from the copy constructor for the contained value[.](#3.sentence-1)

[ð](#lib:operator=,any_)

`any& operator=(any&& rhs) noexcept;
`

[4](#4)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7335)

*Effects*: As if by any(std​::​move(rhs)).swap(*this)[.](#4.sentence-1)

[5](#5)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7339)

*Postconditions*: The state of *this is equivalent to the original state of rhs[.](#5.sentence-1)

[6](#6)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7343)

*Returns*: *this[.](#6.sentence-1)

[ð](#lib:operator=,any__)

`template<class T>
  any& operator=(T&& rhs);
`

[7](#7)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7355)

Let VT be decay_t<T>[.](#7.sentence-1)

[8](#8)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7358)

*Constraints*: VT is not the same type as any andis_copy_constructible_v<VT> is true[.](#8.sentence-1)

[9](#9)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7363)

*Preconditions*: VT meets the [*Cpp17CopyConstructible*](utility.arg.requirements#:Cpp17CopyConstructible "16.4.4.2 Template argument requirements [utility.arg.requirements]") requirements[.](#9.sentence-1)

[10](#10)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7367)

*Effects*: Constructs an object tmp of type any that contains an object of type VT direct-initialized with std​::​forward<T>(rhs), and tmp.swap(*this)[.](#10.sentence-1)

No effects if an exception is thrown[.](#10.sentence-2)

[11](#11)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7372)

*Returns*: *this[.](#11.sentence-1)

[12](#12)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/utilities.tex#L7376)

*Throws*: Any exception thrown by the selected constructor of VT[.](#12.sentence-1)
