Re: How does the ambiguity check work

IIUC Jan is working on a ghc branch, not a plugin. But perhaps this ticket will point in the right direction anyway? HTH. https://gitlab.haskell.org/ghc/ghc/issues/16639 On Mon, Sep 30, 2019, 01:44 Richard Eisenberg wrote: > Hi Jan, > > The ambiguity check has a simple description. To test if a

Re: How does the ambiguity check work

Hi Jan, The ambiguity check has a simple description. To test if a type `ty` is ambiguous, do this: ``` x :: ty x = x ``` Iff that type-checks, the type is unambiguous. That's it! The check does not manufacture a binding `x`, but the implementation runs through the type-checking process for a