Re: A struct with a tuple as alias this, is kind of confusing

[Yuxuan Shui via Digitalmars-d]

On Friday, 27 July 2018 at 10:17:21 UTC, Yuxuan Shui wrote:

First, it surprised me that I can't index a struct like that. So:

struct A(T...) {
    alias S = T;
    alias S this;
}

alias B = A!(int, double);
B[0] x; // Actually an array

Then, it surprised me again, that I actually can index it, sometimes

static if (!is(B[0] == B[1]))
    pragma(msg, "Works!");

Why is this language like this :(

Oh no, is it just defining arrays in the is() statement, though?

But wait, this works:

alias C = A!(1,2,3);
static if (C[0] < C[1])
   pragma(msg, "Ha!");