
20 Jan
2015
20 Jan
'15
2:22 p.m.
Hi! Am Dienstag, 20. Januar 2015, 13:44:01 schrieben Sie:
The leading underscore invokes the typed holes extension. If you want to use such names, you'll need {-# LANGUAGE NoTypedHoles #-} as the first line of the source file.
I get this error, when I use "{-# LANGUAGE NoTypedHoles #-}": ex.hs:1:14: Unsupported extension: NoTypedHoles I'm using GHC 7.8.3. Could it be that the "NoTypedHoles" extension was added not before 7.8.4 (the most current version). Bye Volker