Tupz: is it syntactic sugar or more?

[Yannick Duchêne]

Postiats defines a built‑in symbol named `tupz` which is to be used as `tupz!` (an added `!` like with `println!` and the likes).

It seems to turn a list of expressions (space separated like for function application) into a flat tuple (a flat record where labels are increasing integers).

But I don’t get the intent.

Why have this:

        val a = tupz! 1 2 3

Instead of this:

        val a = @(1, 2, 3)

Is this syntactic sugar or is there more with it?

[Hongwei Xi]

At one point, I wanted to give the user a way to

introduce special syntax into ATS. I did not really

go far. The keyword 'tupz' was a result of this experiment.

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