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tcfail058.hs:6:7: error:
• Expecting one more argument to ‘Array a’
Expected a constraint, but ‘Array a’ has kind ‘* -> *’
• In the type signature: f :: (Array a) => a -> b
tcfail058.hs:7:7: error:
• Could not deduce: a ~ b
from the context: Array a
bound by the type signature for:
f :: forall a b. Array a => a -> b
at tcfail058.hs:6:1-24
‘a’ is a rigid type variable bound by
the type signature for:
f :: forall a b. Array a => a -> b
at tcfail058.hs:6:1-24
‘b’ is a rigid type variable bound by
the type signature for:
f :: forall a b. Array a => a -> b
at tcfail058.hs:6:1-24
• In the expression: x
In an equation for ‘f’: f x = x
• Relevant bindings include
x :: a (bound at tcfail058.hs:7:3)
f :: a -> b (bound at tcfail058.hs:7:1)
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