reduce

stream 과 parallel stream 차이 (Java 8) - A parallel stream has a much higher overhead to a sequential one. https://stackoverflow.com/questions/20375176/should-i-always-use-a-parallel-stream-when-possible?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa Should I always use a parallel stream when possible? With Java 8 and lambdas it's easy to iterate over collections as strea..