[Haskell-cafe] Introspection

[Patrick Browne]

Is it possible to access type information and perform either of the
following in a Haskell program?

1) Find the type/class of a variable
e.g. a type predicate:  is y of-type A, or is y of-Class A

2) Assert the type of a variable
e.g. if y.length > 100 then y is of type big.

Regards,
Pat


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