< cpp‎ | experimental‎ | ranges
Technical specifications
Filesystem library (filesystem TS)
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Library fundamentals 2 (library fundamentals TS v2)
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URNG concept
template< class T >

concept bool CopyConstructible =
    MoveConstructible<T> &&
    Constructible<T, T&> && ConvertibleTo<T&, T> &&
    Constructible<T, const T&> && ConvertibleTo<const T&, T> &&

    Constructible<T, const T> && ConvertibleTo<const T, T>;
(ranges TS)

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.

[edit] See also

checks if a type has a copy constructor
(class template) [edit]