guava-kotlin/ca.solostudios.guava.kotlin.collect/plus

plus

@ExperimentalGuavaCollectionsApi
operator fun <E> Multiset<E>.plus(other: Multiset<E>): Multiset<E>(source)

Returns an unmodifiable view of the sum of two multisets. In the returned multiset, the count of each element is the sum of its counts in the two backing multisets. The iteration order of the returned multiset matches that of the element set of this followed by the members of the element set of other that are not contained in other, with repeated occurrences of the same element appearing consecutively.

Results are undefined if this and other are based on different equivalence relations (as GuavaHashMultiset and GuavaTreeMultiset are).

See also