185     Optional(RefType & reference) { m_ptr = &reference; }  in Optional()
186     Optional(std::nullptr_t) { m_ptr = nullptr; }  in Optional()
188     operator RefType*() const { return m_ptr; }  in operator RefType*()
189     RefType const* operator->() const { return m_ptr; }  in operator ->()
190     explicit operator bool() const { return !!m_ptr; }  in operator bool()
193     RefType *m_ptr;  member in vk::Optional
203       , m_ptr(nullptr)  in ArrayProxy()
208       , m_ptr(&ptr)  in ArrayProxy()
213       , m_ptr(ptr)  in ArrayProxy()
219       , m_ptr(data.data())  in ArrayProxy()
225       , m_ptr(data.data())  in ArrayProxy()
231       , m_ptr(data.data())  in ArrayProxy()
237       , m_ptr(data.data())  in ArrayProxy()
242       , m_ptr(data.begin())  in ArrayProxy()
247       return m_ptr;  in begin()
252       return m_ptr + m_count;  in end()
257       assert(m_count && m_ptr);  in front()
258       return *m_ptr;  in front()
263       assert(m_count && m_ptr);  in back()
264       return *(m_ptr + m_count - 1);  in back()
279       return m_ptr;  in data()
284     T *       m_ptr;  member in vk::ArrayProxy