[isabelle-dev] ML equality types

[Florian Haftmann]

>>     val equal: ''a -> ''a -> bool
>>     val not_equal:  ''a -> ''a -> bool
> 
> As far as I know, David Matthews is doing a dictionary construction
> internally (for some years already).  So it is just a minimal form of
> Haskell-style type-class discipline.

OK, I didn't quite remember this.  So, this should be fine indeed.

	Florian

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