Am 05.01.2011 09:24, schrieb Magicloud Magiclouds:
Hi, I am using Data.Binary which defined "instance Binary a => Binary [a]". Now I need to define "instance Binary [String]" to make something special for string list. How to make it work? I looked into the chapter of overlappinginstances, nothing works.
Just a guess: Have you enabled TypeSynonymInstances? (As String is a type synonym, at least this extension would be required)
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