origin map returns the tree of origin of the map, if it exists.

Note: The sole consumer of this function is expected to be the tree-encoding library.

string_of_key key turns the given key into a string.

pp pp_value gives you a pretty-printer. This function is a witness of internal mutation.

to_string show map generates a string representation of map by using show for its values. Like pp this function is witness of internal mutation.

create ?values ?produce_value ?origin num_elements produces a lazy map with num_elements entries where each is created using produce_value. values may be provided to supply an initial set of entries.

Note: This function is intended to be used produce_value should only be used by the tree-encoding library. If you want to fill a newly created map with some value, use values or set on the empty map.

get key map retrieves the element at key.

• raises UnexpectedAccess

  when trying to access an invalid key (e.g., when the key has been deleted).

set key value map sets the element at key to value.

• raises Exn.Bounds

  when trying to set an invalid key

remove key map marks the element at key as removed.

dup map duplicates map.

Note: the produce_value continuation is shared between the resulting map and map, meaning that if said continuation carries a state, the two maps will interfere with each others. This is safe when used in conjunction with lib_tree_encoding, because the continuation is pure in the sense it will always returns the same result when called with the same argument.

loaded_bindings map returns the (key * 'a) list representation of the map map containing only the loaded values, in order of increasing keys. This function is a witness of internal mutations.