[Agda] Positivity checker

Nils Anders Danielsson nad at Cs.Nott.AC.UK
Wed Dec 10 14:42:47 CET 2008


On 2008-12-10 04:36, Gyesik Lee wrote:
>> I find your arguments for prefering inductively to recursively defined
>> families interesting, but hardly conclusive. My own feeling is that it
>> depends on the situation which is better. For cases like Vec, the inductive
>> one is a "generator" and the recursive one simplifies.
> 
> I agree. My experience with Coq tells me it really depends on the
> situation whether you should choose for an inductive definition or for
> a recursive function, of course when you have both options.

Right, sometimes you want things to evaluate more, and then a recursive
definition can be useful.

-- 
/NAD

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