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defndaines/SingleArgReduce.java

Created June 4, 2016 01:40
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SingleArgReduce.java
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
List<Long> numbers = Collections.emptyList();
Optional<Long> result = numbers.stream().reduce(Math::max);
// result.orElse(-1L) == -1L;
numbers = Arrays.asList(52L, 127L, 1337L);
result = numbers.stream().reduce(Math::max);
// result.get() == 1337L;
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