<@U0BFDUP0E> this is the java one I wrote `return ...
# announcementst
tianhao
10/19/2017, 5:37 AM@jw this is the java one I wrote
return list.stream().allMatch(new HashSet<>()::add);tianhao
10/19/2017, 5:37 AMreturn list.stream().allMatch(new HashSet<>()::add);