std::experimental::ranges::tagged::operator=

C++

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Headers

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Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

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Strings library

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Numerics library

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Regular expressions library (C++11)

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Technical Specifications

Technical specifications

Filesystem library (filesystem TS)

Library fundamentals (library fundamentals TS)

Library fundamentals 2 (library fundamentals 2 TS)

Extensions for parallelism (parallelism TS)

Extensions for parallelism 2 (parallelism TS v2)

Extensions for concurrency (concurrency TS)

Concepts (concepts TS)

Ranges (ranges TS)

Special mathematical functions (special math TR)

Ranges

Concepts

General utilities

Iterators

Ranges

Algorithms

General utilities library

Utility components
swap	exchange
Function objects
invoke identity	equal_to not_equal_to	greater less	greater_equal less_equal
Metaprogramming and type traits
is_swappable_withis_swappable	is_nothrow_swappable_withis_nothrow_swappable	common_reference common_type
Tagged pairs and tuples
TagSpecifier TaggedType	tagged tag specifiers	tagged_pair make_tagged_pair	tagged_tuple make_tagged_tuple

std::experimental::ranges::tagged

Member functions

tagged::tagged

tagged::operator=

tagged::swap

Named accessors

Non-member functions

ranges::swap(ranges::tagged)

Helper classes

tuple_size

tuple_element

tagged &operator=(tagged&& that) = default;	(1)
tagged &operator=(const tagged& that) = default;	(2)
template <class Other> requires Assignable<Base&, Other> constexpr tagged& operator=(ranges::tagged<Other, Tags...>&& that) noexcept(std::is_nothrow_assignable<Base&, Other>::value);	(3)
template <class Other> requires Assignable<Base&, const Other&> constexpr tagged& operator=(const ranges::tagged<Other, Tags...>& that);	(4)
template <class U> requires Assignable<Base&, U> && !Same<std::decay_t<U>, tagged> constexpr tagged& operator=(U&& that) noexcept(std::is_nothrow_assignable<Base&, U>::value);	(5)

Assigns the contents of that to *this.

1-2) tagged has defaulted copy and move assignment operators that invoke the corresponding assignment operator of Base.

3) Converting move assignment from a different tagged specialization with matching tags. Equivalent to static_cast<Base&>(*this) = static_cast<Other&&>(that);.

4) Converting copy assignment from a different tagged specialization with matching tags. Equivalent to static_cast<Base&>(*this) = static_cast<const Other&>(that);.

5) Assigns that to the Base subobject. Equivalent to static_cast<Base&>(*this) = std::forward<U>(that);

Return value

*this.