type t
type left
type right
val empty : t
val is_empty : t ‑> bool
val add : t ‑> left ‑> right ‑> t
Add a binding (left,right).
val remove : t ‑> left ‑> right ‑> t
Remove a specific binding.
val cardinal_left : t ‑> int
Number of distinct left keys.
val cardinal_right : t ‑> int
Number of distinct right keys.
val remove_left : t ‑> left ‑> t
Remove all bindings for the left key.
val remove_right : t ‑> right ‑> t
Remove all bindings for the right key.
val mem_left : t ‑> left ‑> bool
Is the left key present in at least one pair?
val mem_right : t ‑> right ‑> bool
Is the right key present in at least one pair?
val find_left : t ‑> left ‑> right sequence
Find all bindings for this given left-key.
val find_right : t ‑> right ‑> left sequence
Find all bindings for this given right-key.
val find1_left : t ‑> left ‑> right option
Like find_left but returns at most one value.
val find1_right : t ‑> right ‑> left option
Like find_right but returns at most one value.
val fold : ('a ‑> left ‑> right ‑> 'a) ‑> 'a ‑> t ‑> 'a
Fold on pairs.
val pairs : t ‑> (left * right) sequence
Iterate on pairs.
val add_pairs : t ‑> (left * right) sequence ‑> t
Add pairs.
val seq_left : t ‑> left sequence
val seq_right : t ‑> right sequence