flink从入门到精通系列之：map、flatmap、filter

flink从入门到精通系列之：map、flatmap、filter
import org.apache.flink.api.common.functions.FilterFunction;
import org.apache.flink.api.common.functions.FlatMapFunction;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamEx

flink从入门到精通系列之：map、flatmap、filter最先出现在Python成神之路。