[isabelle-dev] »real« considered harmful

[Florian Haftmann]

> Conceivably we could introduce a prefix syntax for type constraints, e.g.
> 
> 	[:real:]of_nat k
> 
> I’d find such a thing useful from time to time.

My personal favourite would be System-F-style type instantiation

	of_nat [real] k

instead of type annotations but there are hardly any brackets left which
could serve here.

	Florian

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