[Haskell-cafe] Strange type error with -XTypeApplications
Mitchell Rosen
mitchellwrosen at gmail.com
Sat Jun 4 20:32:08 UTC 2016
This program:
* {-# LANGUAGE TypeApplications #-}*
* main = print (fromDynamic @Int undefined)*
produces this error message:
* foo.hs:3:15: error:*
* • Cannot apply expression of type ‘t0’*
* to a visible type argument ‘Int’*
* • In the first argument of ‘print’, namely*
* ‘(fromDynamic @Int undefined)’*
* In the expression: print (fromDynamic @Int undefined)*
* In an equation for ‘main’:*
* main = print (fromDynamic @Int undefined)*
However, I'd expect it to be "Not in scope: fromDynamic"
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