Module collections 

Functions

btreemap_new

Construct an empty BTreeMap.

hashmap_insert

Insert value into map under key, returning the previous value.

hashmap_new

Construct an empty HashMap.

hashmap_with_capacity

Construct a HashMap pre-allocated for at least capacity entries.

hashset_new

Construct an empty HashSet.

insert

Insert value into map under key, returning the previous value.