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val length : 'a list -> int
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val tl : 'a list -> 'a list
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val nth : 'a list -> int -> 'a
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val rev : 'a list -> 'a list
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val append : 'a list -> 'a list -> 'a list
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val rev_append : 'a list -> 'a list -> 'a list
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val concat : 'a list list -> 'a list
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val flatten : 'a list list -> 'a list
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val iter : ('a -> unit) -> 'a list -> unit
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val iteri : (int -> 'a -> unit) -> 'a list -> unit
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val map : ('a -> 'b) -> 'a list -> 'b list
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val mapi : (int -> 'a -> 'b) -> 'a list -> 'b list
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val rev_map : ('a -> 'b) -> 'a list -> 'b list
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val fold_left : ('a -> 'b -> 'a) -> 'a -> 'b list -> 'a
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val fold_right : ('a -> 'b -> 'b) -> 'a list -> 'b -> 'b
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val iter2 : ('a -> 'b -> unit) -> 'a list -> 'b list -> unit
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val map2 : ('a -> 'b -> 'c) -> 'a list -> 'b list -> 'c list
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val rev_map2 : ('a -> 'b -> 'c) -> 'a list -> 'b list -> 'c list
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val fold_left2 : ('a -> 'b -> 'c -> 'a) -> 'a -> 'b list -> 'c list -> 'a
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val fold_right2 : ('a -> 'b -> 'c -> 'c) -> 'a list -> 'b list -> 'c -> 'c
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val for_all : ('a -> bool) -> 'a list -> bool
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val exists : ('a -> bool) -> 'a list -> bool
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val for_all2 : ('a -> 'b -> bool) -> 'a list -> 'b list -> bool
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val exists2 : ('a -> 'b -> bool) -> 'a list -> 'b list -> bool
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val mem : 'a -> 'a list -> bool
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val memq : 'a -> 'a list -> bool
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val find : ('a -> bool) -> 'a list -> 'a
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val filter : ('a -> bool) -> 'a list -> 'a list
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val find_all : ('a -> bool) -> 'a list -> 'a list
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val partition : ('a -> bool) -> 'a list -> 'a list * 'a list
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val assoc : 'a -> ('a * 'b) list -> 'b
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val assq : 'a -> ('a * 'b) list -> 'b
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val mem_assoc : 'a -> ('a * 'b) list -> bool
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val mem_assq : 'a -> ('a * 'b) list -> bool
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val remove_assoc : 'a -> ('a * 'b) list -> ('a * 'b) list
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val remove_assq : 'a -> ('a * 'b) list -> ('a * 'b) list
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val split : ('a * 'b) list -> 'a list * 'b list
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val combine : 'a list -> 'b list -> ('a * 'b) list
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val sort : ('a -> 'a -> int) -> 'a list -> 'a list
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val stable_sort : ('a -> 'a -> int) -> 'a list -> 'a list
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val fast_sort : ('a -> 'a -> int) -> 'a list -> 'a list
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val sort_uniq : ('a -> 'a -> int) -> 'a list -> 'a list
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val merge : ('a -> 'a -> int) -> 'a list -> 'a list -> 'a list