< cpp‎ | concepts
Defined in header <concepts>
template< class Derived, class Base >

concept DerivedFrom =
  std::is_base_of_v<Base, Derived> &&

  std::is_convertible_v<const volatile Derived*, const volatile Base*>;
(since C++20)

The concept DerivedFrom<Derived, Base> is satisfied if and only if Base is a class type that is either Derived or a public and unambiguous base of Derived, ignoring cv-qualifiers.

Note that this behaviour is different to std::is_base_of when Base is a private or protected base of Derived.

See also

checks if a type is derived from the other type
(class template)
checks if a type can be converted to the other type
(class template)