Bill Baxter さんは書きました:
Did go do away with the comma sequencing operator?
I can't find it. That's the first thing D needs to do.
Otherwise
a,b = function()
is difficult to make work.
How about redefining the comma operator as a "tuple constructor"
with its precedence unchanged?
In so doing, we may write:
(int, int) func(int x, int y) { return y, x; }
// tuple-to-tuple function
// (int, int) is a type tuple, "int x, int y" a named type tuple,
// and "y, x" an expression tuple.
(int, int) t = func(0, 1);
// t is a type-tuple-typed variable.
int a, b;
(a, b) = func(t);
// (a, b) is an lvalue tuple.
and f(0, 1) beautifully has the same semantics with f((0, 1)) by the
tuple flattening.
