First attempt It\'s difficult to make this question pithy, but to provide a minimal example, suppose I have this type:
Here\'s my problem I\'m using Control.Exception.catch for my exception handling, which has the following type:
I have a pretty straightforward function that takes a parameterized data type and returns the same type:
Could anyone give me suggestions/advice on making type level integers in OCaml (3.12) supporting addition and subtraction operations on them?
Can someone point me at a good set of examples for defining Typeable or Typeable1 instances for GADTs in Haskell.
I have a GADT defined like (abbreviated), {-# LANGUAGE StandaloneDeriving #-} data D t where C :: t -> D t
I have written the following Haskell program to interpret basic math. I would like to add comparison and boolean operators in addition to mathematical operators. My question is how I should go about r
When answering a question with a suggestion to use GADTs, some questions with regards to performance came up in the comments. The question involved a typeclass PlotValue:
Suppose we define a GADT for comparison of types: data EQT a b where Witness :: EQT a a Is it then possible to declare a function eqt with the following type signature:
I started reading about GADT in Haskell Wiki but didn\'t feel quite comf开发者_Python百科ortable understanding it. Do you recommend a specific book chapter or a blog post explaining GADT for a Haskell
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