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T3330a.hs:19:34:
Couldn't match type `ix'
with `r ix1 -> Writer [AnyF ((->) (s0 ix0 -> ix1))] (r'0 ix1)'
`ix' is a rigid type variable bound by
the type signature for children :: s ix -> PF s r ix -> [AnyF s]
at T3330a.hs:18:13
Expected type: (s0 ix0 -> ix1)
-> r ix1 -> Writer [AnyF s] (r'0 ix1)
Actual type: s ix
Relevant bindings include
children :: s ix -> PF s r ix -> [AnyF s] (bound at T3330a.hs:19:1)
p :: s ix (bound at T3330a.hs:19:10)
x :: PF s r ix (bound at T3330a.hs:19:12)
In the first argument of `hmapM', namely `p'
In the first argument of `execWriter', namely `(hmapM p collect x)'
In the expression: execWriter (hmapM p collect x)
T3330a.hs:19:34:
Couldn't match type `s' with `(->) (s0 ix0 -> ix1)'
`s' is a rigid type variable bound by
the type signature for children :: s ix -> PF s r ix -> [AnyF s]
at T3330a.hs:18:13
Expected type: (s0 ix0 -> ix1)
-> r ix1 -> Writer [AnyF s] (r'0 ix1)
Actual type: s ix
Relevant bindings include
children :: s ix -> PF s r ix -> [AnyF s] (bound at T3330a.hs:19:1)
p :: s ix (bound at T3330a.hs:19:10)
x :: PF s r ix (bound at T3330a.hs:19:12)
In the first argument of `hmapM', namely `p'
In the first argument of `execWriter', namely `(hmapM p collect x)'
In the expression: execWriter (hmapM p collect x)
T3330a.hs:19:44:
Couldn't match type `ix' with `r0 ix0 -> Writer [AnyF s0] (r0 ix0)'
`ix' is a rigid type variable bound by
the type signature for children :: s ix -> PF s r ix -> [AnyF s]
at T3330a.hs:18:13
Expected type: PF s r (r0 ix0 -> Writer [AnyF s0] (r0 ix0))
Actual type: PF s r ix
Relevant bindings include
children :: s ix -> PF s r ix -> [AnyF s] (bound at T3330a.hs:19:1)
p :: s ix (bound at T3330a.hs:19:10)
x :: PF s r ix (bound at T3330a.hs:19:12)
In the third argument of `hmapM', namely `x'
In the first argument of `execWriter', namely `(hmapM p collect x)'
In the expression: execWriter (hmapM p collect x)
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