OZO 「お象」
Boost.Asio and libpq based asynchronous PostgreSQL unofficial header-only C++17 client library.
OperatorNot Interface Reference
Core » Concepts

#include <ozo/core/concept.h>

Description

Negation operator support concept.

Type T models OperatorNot concept if for its object t valid static_assert(std::is_same_v<decltyp(!t), bool>,"").