-tcfail023.hs:1:
- Duplicate or overlapping instance declarations
- for `A B' at tcfail023.hs:13 and tcfail023.hs:10
+Duplicate or overlapping instance declarations:
+ tcfail023.hs:10: {A B}
+ tcfail023.hs:13: {A B}
tcfail023.hs:11:
Couldn't match `B' against `Bool'
Expected type: B
Inferred type: Bool
In the right-hand side of an equation for `op': True
-
-Compilation had errors
-