3 Warning: No explicit method nor default method for `signum'
4 in an instance declaration for `Num'
7 Warning: No explicit method nor default method for `abs'
8 in an instance declaration for `Num'
11 Could not deduce `Ord a'
12 (arising from use of `SubRange' at tcfail067.hs:65)
13 from the context: (Num (SubRange a),
19 Probable cause: missing `Ord a' in instance declaration context
20 When checking the methods of an instance declaration
23 Could not deduce `Show (SubRange a)'
24 (arising from an instance declaration at tcfail067.hs:65)
25 from the context: (Num a)
26 Probable cause: missing `Show (SubRange a)'
27 in instance declaration context
28 or missing instance declaration for `Show (SubRange a)'
29 When checking the superclasses of an instance declaration
32 Could not deduce `Ord a'
33 (arising from use of `SubRange' at tcfail067.hs:74)
34 from the context: (Num a)
35 Probable cause: missing `Ord a'
36 in type signature for `numSubRangeBinOp'
37 When checking the type signature(s) for `numSubRangeBinOp'
39 Compilation had errors