Conduit_trieRadix tree that can do longest-prefix searches on string keys
val empty : 'a tAn empty tree
insert key value tree returns a new tree with the mapping key to value
val longest_prefix : string -> 'a t -> 'a optionlongest_prefix key tree finds the key k which shares the longest prefix with key and returns the associated value.
val fold : (string -> 'a -> 'b -> 'b) -> 'b -> 'a t -> 'bfold f initial t folds f over all bindings in t