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T19843h.hs:14:7: error: [GHC-39999]
• No instance for ‘GHC.Records.HasField "mup" r4 a4’
arising from selecting the field ‘mup’
Perhaps use record field of A ‘mop’ (line 11)
• In the expression: undefined.mup
In an equation for ‘foo’: foo = undefined.mup
T19843h.hs:16:7: error: [GHC-39999]
• No instance for ‘GHC.Records.HasField "traverse" r3 a3’
arising from selecting the field ‘traverse’
• In the expression: undefined.traverse
In an equation for ‘bar’: bar = undefined.traverse
T19843h.hs:18:7: error: [GHC-39999]
• No instance for ‘GHC.Records.HasField "getSum" r2 a2’
arising from selecting the field ‘getSum’
• In the expression: undefined.getSum
In an equation for ‘baz’: baz = undefined.getSum
T19843h.hs:20:8: error: [GHC-39999]
• No instance for ‘GHC.Records.HasField "getAlt" r1 a1’
arising from selecting the field ‘getAlt’
• In the expression: undefined.getAlt
In an equation for ‘quux’: quux = undefined.getAlt
T19843h.hs:24:8: error: [GHC-39999]
• No instance for ‘GHC.Records.HasField "getAll" r0 a0’
arising from selecting the field ‘getAll’
Perhaps use record field of Alt ‘getAlt’ (imported from Data.Monoid)
Add ‘getAll’ to the import list in the import of ‘Data.Monoid’
(at T19843h.hs:9:1-28).
• In the expression: undefined.getAll
In an equation for ‘quur’: quur = undefined.getAll
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