18 May
2009
18 May
'09
9:36 p.m.
On May 18, 2009, at 21:19 , michael rice wrote:
*Main> :t ints 0 ints 0 :: Chain *Main> ints 0
<interactive>:1:0: No instance for (Show Chain)
In general, you want to append deriving Show to your types. You may also want to be able to input them in ghci, so instead say deriving (Show, Read) -- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery@kf8nh.com system administrator [openafs,heimdal,too many hats] allbery@ece.cmu.edu electrical and computer engineering, carnegie mellon university KF8NH