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–
stanc
»
Common
»
Foldable
»
Make2
» X
Parameter
Make2.X
type
('a, 'b) t
val
fold :
(
'c
->
'a
->
'c
)
->
(
'c
->
'b
->
'c
)
->
'c
->
(
'a
,
'b
)
t
->
'c