[Template-haskell] Existentials

Keean Schupke k.schupke at imperial.ac.uk
Tue Oct 26 06:18:45 EDT 2004


Hi, any chance of support for existential datatypes in
template-haskell... It currently supports local universal
quantification:

    data A = A (forall a . a)

but not existental:

    data A = forall a . A a

Is this hard to add? It would be really useful to me if TH
did support existentials...

    Regards,
    Keean.


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