Comments (2)
@Dwite why not? Can you give few examples for this function with results?
from lightweight-stream-api.
@aNNiMON most interesting examples you can read here or here .
My own -
Integer partitionItem = 1;
List<Integer> items = Arrays.asList(1, 2, 3, 1, 2, 3, 1, 2, 3);
Map<Boolean, List<Integer>> groupedBy = items.stream()
.collect(Collectors.groupingBy(i -> i.equals(partitionItem)));
items = new ArrayList<>(groupedBy.get(true));
items.addAll(groupedBy.get(false));
System.out.println(ones);
You group items by function into Map
from lightweight-stream-api.
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