package containers

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package containers
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type ('a, 'b) t = ('a * 'b) list
val get : ?eq:('a -> 'a -> bool) -> ('a, 'b) t -> 'a -> 'b option

Find the element

val get_exn : ?eq:('a -> 'a -> bool) -> ('a, 'b) t -> 'a -> 'b

Same as get

  • raises Not_found

    if the element is not present

val set : ?eq:('a -> 'a -> bool) -> ('a, 'b) t -> 'a -> 'b -> ('a, 'b) t

Add the binding into the list (erase it if already present)

val mem : ?eq:('a -> 'a -> bool) -> ('a, _) t -> 'a -> bool

mem l x returns true iff x is a key in l

  • since 0.16
val update : ?eq:('a -> 'a -> bool) -> ('a, 'b) t -> 'a -> f:('b option -> 'b option) -> ('a, 'b) t

update l k ~f updates l on the key k, by calling f (get l k) and removing k if it returns None, mapping k to v' if it returns Some v'

  • since 0.16
val remove : ?eq:('a -> 'a -> bool) -> ('a, 'b) t -> 'a -> ('a, 'b) t

remove l k removes the first occurrence of k from l.

  • since 0.17