Thanks Adam, It indeed does work with a lambda, should've thought about it. So, it seems splices in patterns are new in 7.8 (hadn't seen it in the notes).
Gruss, Christian * adam vogt <vogt.a...@gmail.com> [15.03.2014 05:12]: > Hello Christian, > > It seems new to me that $( ) is allowed in patterns. I would have used > lamE in something like: > > [| $(varE v) >>= return . SM.concatMapM $(lamE [varP v] (buildRns f > (xs++[w]) ys))) |] > > Regards, > Adam
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