#include <metal_stdlib> using namespace metal; template<typename T, size_t N> struct tint_array { const constant T& operator[](size_t i) const constant { return elements[i]; } device T& operator[](size_t i) device { return elements[i]; } const device T& operator[](size_t i) const device { return elements[i]; } thread T& operator[](size_t i) thread { return elements[i]; } const thread T& operator[](size_t i) const thread { return elements[i]; } threadgroup T& operator[](size_t i) threadgroup { return elements[i]; } const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; } T elements[N]; }; void f() { tint_array<float, 4> v = tint_array<float, 4>{}; }