int main() { int x = 0; [&x] { x= 1;}(); // works [&x=std::as_const(x)] { x= 1;}(); // error: assignment of read-only reference 'x' } Not ver

int main() { int x = 0; [&x] { x= 1;}(); // works [&x=std::as_const(x)] { x= 1;}(); // error: assignment of read-only reference 'x' } Not very pretty, but it works.