Java, Eclipse Collections, Open Source, Software Development, Programming.
Collectors.partitioningBy() // Map<T, Long> -> Bag<T> Collectors.groupingBy(Collectors.counting) // Map<K, Collection<V>> -> Multimap<K, V> Collectors.groupingBy() Pair, Bag, and Multimap are just some of the types missing from the JDK. We can call Pair something more specific in the case of