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tcfail043.hs:38:17: error:
Ambiguous type variable ‘a0’ arising from a use of ‘gt’
prevents the constraint ‘(Ord_ a0)’ from being solved.
Relevant bindings include
bs :: [a0] (bound at tcfail043.hs:38:8)
a :: a0 (bound at tcfail043.hs:38:6)
search :: a0 -> [a0] -> Bool (bound at tcfail043.hs:37:1)
Probable fix: use a type annotation to specify what ‘a0’ should be.
These potential instance exist:
instance Ord_ Int -- Defined at tcfail043.hs:34:10
In the expression: gt (hd bs) a
In the expression:
if gt (hd bs) a then
False
else
if eq a (hd bs) then True else search a (tl bs)
In the expression:
\ a bs
-> if gt (hd bs) a then
False
else
if eq a (hd bs) then True else search a (tl bs)
tcfail043.hs:40:25: error:
Ambiguous type variable ‘a0’ arising from a use of ‘eq’
prevents the constraint ‘(Eq_ a0)’ from being solved.
Relevant bindings include
bs :: [a0] (bound at tcfail043.hs:38:8)
a :: a0 (bound at tcfail043.hs:38:6)
search :: a0 -> [a0] -> Bool (bound at tcfail043.hs:37:1)
Probable fix: use a type annotation to specify what ‘a0’ should be.
These potential instances exist:
instance Eq_ Int -- Defined at tcfail043.hs:20:10
instance Eq_ a => Eq_ [a] -- Defined at tcfail043.hs:23:10
In the expression: eq a (hd bs)
In the expression: if eq a (hd bs) then True else search a (tl bs)
In the expression:
if gt (hd bs) a then
False
else
if eq a (hd bs) then True else search a (tl bs)
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