On 09/24/2012 12:11 AM, bearophile wrote:
...
Second: removing comma operator from D has some advantages unrelated to
tuple syntax. Even disallowing bad looking C-like code that uses commas
is an improvement by itself (but maybe it's not a big enough
improvement...).
I would think that it isn't an improvement at all. Disallowing some
construct always will also disallow 'bad looking' code that uses it.
...
4) This looks simple, but allows things like using BigInt in switch
cases, implementing a very simple but quite handy pattern-matching, etc:
auto v = tuple(10, 20);
final switch (v) {
case tuple(5, y): { x in scope... } break; // y is not a global
case tuple(x, y): { ... } break; // this covers all cases
}
...
cases already introduce their own scopes in D, but switch cannot be
extended well to serve such use cases.
I agree with all the other points.
