On 16/09/2014, at 8:51 PM, john skaller wrote:
> Oh YES! Here we go (takes AGES to compile but it works):
> fun _match_ctor_Empty[T] (x:ralist[T]) => ralist_empty x;
Well .. consider this:
fun _match_ctor_Negative (x:int) => x < 0;
match a with | Negative => println$ a.str + "is negative"; endmatch
But, you can also write
_match_ctor_Negative x
to mean "x is Negative" so why not allow that? Except for the union case
which needs some tom foolery it would be easy to translate:
x is Negative ==> _match_ctor_Negative x
But now there's a serious question: why can't
x is Negative
just be a synonym for
Negative x
??
Hmm .. seeking syntactic unification here.
--
john skaller
[email protected]
http://felix-lang.org
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