How to use

flowGroupListMapper

method

in

com.wizzardo.tools.collections.flow.Flow

public <K> FlowToMap<K, List<B>, FlowGroup<K, B>> toMap(Supplier<Map<K, FlowGroup<K, B>>> groupMapSupplier, Mapper<B, K> toKey) {
  return toMap(groupMapSupplier, toKey, Flow.<K, B>flowGroupListMapper());
}

public FlowToMap<K, List<T>, B> toMap() {
  return toMap(Flow.<K, T>flowGroupListMapper());
}

public FlowToMap<K, List<T>, B> toMap() {
  return toMap(Flow.<K, T>flowGroupListMapper());
}

public <K> FlowToMap<K, List<B>, FlowGroup<K, B>> toMap(Supplier<Map<K, FlowGroup<K, B>>> groupMapSupplier, Mapper<B, K> toKey) {
  return toMap(groupMapSupplier, toKey, Flow.<K, B>flowGroupListMapper());
}

@Test
public void test_toMap() {
  Map<Boolean, List<Integer>> map = Flow.of(1, 2, 3)
      .toMap(new Mapper<Integer, Boolean>() {
        @Override
        public Boolean map(Integer integer) {
          return integer % 2 == 0;
        }
      }, Flow.<Boolean, Integer>flowGroupListMapper())
      .get();
  Assert.assertEquals(2, map.size());
  Assert.assertEquals(1, map.get(true).size());
  Assert.assertEquals(Integer.valueOf(2), map.get(true).get(0));
  Assert.assertEquals(2, map.get(false).size());
  Assert.assertEquals(Integer.valueOf(1), map.get(false).get(0));
  Assert.assertEquals(Integer.valueOf(3), map.get(false).get(1));
}