Sven Barth wrote:
As Michael said Pascal is a declarative language (though this has been
forgotten some times) so I'd allow the declaration of tuple types using
something like "tuple of (type1, type2, etc.)"
etc. Yes, I like it. This also sorts out the lack of multiple assignment
that somebody was complaining about in the fpc-pascal ML a few days ago.
Some way of extending a single value to fill a tuple where all the
elements are of the same type would be useful, note that I'm not
suggesting any other relaxation of type checking.
(x, y, z) := (0, 0, 0); // OK
(x, y, z) := Tuple(0); // OK
(x, y, z) := (0, 0); // Not OK
(x, y, z) := Tuple(0, 0); // Not OK
So if I understand things correctly, brackets [] are used where the
number of contained elements is indeterminate (sets, multidimensional
array indices, arrays of const) and parentheses where it's determinate
(tuples, record initialisation etc.).
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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