package com.smartor.common;

import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;

/**
 * 去重工具类
 */
public class DistinctByProperty {

    // 创建去重工具方法，根据集合中上属性
    public static <T> List<T> distinctByProperty(
            List<T> list,
            Function<? super T, ?> keyExtractor) {

        Set<Object> seen = new HashSet<>();
        return list.stream()
                .filter(item -> seen.add(keyExtractor.apply(item)))
                .collect(Collectors.toList());
    }
}