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A comment on Rust as a gateway drug to Haskell. Parent comment

Re:Rust as a gateway drug to Haskell by adamwk on Wednesday June 14, 2017 @12:49PM (#14553974)
MLs have higher kinder types.
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Re:Rust as a gateway drug to Haskell by lmm on Thursday June 15, 2017 @04:02AM (#14558655)
Which ones? OCaml is planning to add them via its "modular implicits" work but that hasn't happened yet; none of the SML implementations I used mentioned them.
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Re:Rust as a gateway drug to Haskell by adamwk on Thursday June 15, 2017 @05:47PM (#14564675)
I think you're confusing higher-kinded types with type classes. You're right that neither has type classes.
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