16 Nov
2004
16 Nov
'04
3:04 p.m.
Hi all, Is there a good reason why I can't say data Bar = Bar { _ :: Int, _ :: Char, x :: Bool } ? (Or "data Bar = Bar { Int, Char, x :: Bool }" if you prefer, but that's susceptible to typos of the "x, y, z :: Int" syntax causing confusion). I have a large datastructure in which there is one field I wish to be able to use field reads and updates for, but I don't want to have to invent loads of names for the other fields. The only minor issue I can think of is that the derived Show instance would say Bar{_=5,_='c',x=True} but, while it's a bit odd, I don't think it's a problem. Thanks Ian