std::experimental::ranges::CopyConstructible(3) | C++ Standard Libary | std::experimental::ranges::CopyConstructible(3) |
NAME¶
std::experimental::ranges::CopyConstructible - std::experimental::ranges::CopyConstructible
Synopsis¶
Defined in header <experimental/ranges/concepts>
template< class T >
concept bool CopyConstructible =
MoveConstructible<T> && (ranges TS)
Constructible<T, T&> && ConvertibleTo<T&, T>
&&
Constructible<T, const T&> && ConvertibleTo<const
T&, T> &&
Constructible<T, const T> && ConvertibleTo<const T,
T>;
The concept CopyConstructible is satisfied if T is an lvalue reference type,
or if
it is a MoveConstructible object type where an object of that type can
constructed
from a (possibly const) lvalue or const rvalue of that type in both direct-
and
copy-initialization contexts with the usual semantics (a copy is constructed
with
the source unchanged).
More precisely, if T is an object type, then CopyConstructible<T> is
satisfied only
if given
* v, an lvalue of type (possibly const) T or an rvalue of type const T,
the following are true:
* After the definition T u = v;, u is equal to v;
* T{v} is equal to v.
See also¶
is_copy_constructible
is_trivially_copy_constructible
is_nothrow_copy_constructible checks if a type has a copy constructor
(C++11) (class template)
(C++11)
(C++11)
2024.06.10 | http://cppreference.com |