DiffArray should be instance of Show

I would think that DiffArray should be an instance of
Show.  It's not.

   thanks,
   mike

Trac metadata

Trac field	Value
Version	5.0
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	ResolvedFixed
Component	hslibs/lang
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture