From cppreference.com
template<classT>conceptdestructible=std::is_nothrow_destructible_v<T>;(since C++20)The concept destructible specifies the concept of all types whose instances can safely be destroyed at the end of their lifetime (including reference types).
Notes
Unlike the
named requirement, std::destructible requires the destructor to be noexcept(true), not merely non-throwing when invoked, and allows reference types and array types.
References
C++23 standard (ISO/IEC 14882:2024):
18.4.10 Concept destructible [concept.destructible]
C++20 standard (ISO/IEC 14882:2020):
18.4.10 Concept destructible [concept.destructible]
See also