4 Dec
2008
4 Dec
'08
10:49 p.m.
On Thu, 2008-12-04 at 14:46 -0800, Ryan Ingram wrote:
If you really, really wanted to define Show [ShipInfo], then putting
{-# LANGUAGE FlexibleInstances, OverlappingInstances #-}
at the beginning of your file would work. At the cost of using overlapping instances, of course.
And at the cost of causing code like this:
f :: Show a => [a] -> String f xs = show xs
to fail to compile (see "Incoherent Instances").
Right.
Implement "showList"; it's the Right Answer for this case.
Yeah. jcc