[Agda] I'm having an issue modeling type classes with records

[Andreas Abel]

On 20.09.2013 19:57, Chris Moline wrote:
>
> |  module TypeClassModeling where
> |
> |  data Bool : Set where
> |    true false : Bool
> |
> |  record Eq (t : Set) : Set where
> |    field equal : t -> t -> Bool
> |
> |  record Ord {a : Set} (A : Eq a) : Set where
> |    field _<_ : A -> A -> Bool

This works:

record Ord {A : Set} (eq : Eq A) : Set where
   field _<_ : A -> A -> Bool

less-than is still a relation on a *type* A!

-- 
Andreas Abel  <><      Du bist der geliebte Mensch.

Theoretical Computer Science, University of Munich
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andreas.abel at ifi.lmu.de
http://www2.tcs.ifi.lmu.de/~abel/