[Haskell-cafe] question on types

Daryoush Mehrtash dmehrtash at gmail.com
Tue Feb 17 19:12:32 EST 2009

Is there a way to define a type with qualification on top of existing type
(e.g.  prime numbers)?   Say for example I want to define a computation that
takes a prime number and generates a string.   Is there any way I can do
that in Haskell?


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