#ifndef MBGL_UTIL_NONCOPYABLE #define MBGL_UTIL_NONCOPYABLE namespace mbgl { namespace util { namespace non_copyable_ { class noncopyable { protected: constexpr noncopyable() = default; ~noncopyable() = default; noncopyable( noncopyable const& ) = delete; noncopyable& operator=(noncopyable const& ) = delete; }; } typedef non_copyable_::noncopyable noncopyable; }} #endif