cvs commit: hugs98/src preds.c type.c

[ross@glass.cse.ogi.edu]

ross        2003/07/03 10:30:47 PDT

  Modified files:
    src                  preds.c type.c 
  Log:
  Extend defaulting of types of expressions typed at the prompt: instead of
  requiring a numeric constraining, also accept Show, Eq or Ord.  This matches
  the recent change to GHCi, fixing the beginner trap Ralf Hinze complained of:
  
  	Prelude> []
  	ERROR - Cannot find "show" function for:
  	*** Expression : []
  	*** Of type    : [a]
  
  and also (like GHCi) allows [] == [] and [] < [], but only at the prompt.
  
  Revision  Changes    Path
  1.32      +17 -13    hugs98/src/preds.c
  1.70      +10 -10    hugs98/src/type.c