在Go中实现结构切片或映射的通用过滤器

package main

import (
    "fmt"
)

type Person struct {
    Name string
    Age  int
}

type FilterFunc func(interface{}) bool

func Filter(slice interface{}, filterFunc FilterFunc) interface{} {
    switch slice := slice.(type) {
    case []Person:
        result := []Person{}
        for _, item := range slice {
            if filterFunc(item) {
                result = append(result, item)
            }
        }
        return result
    case map[string]Person:
        result := map[string]Person{}
        for key, item := range slice {
            if filterFunc(item) {
                result[key] = item
            }
        }
        return result
    default:
        return nil
    }
}

func main() {
    people := []Person{
        {Name: "Alice", Age: 25},
        {Name: "Bob", Age: 30},
        {Name: "Charlie", Age: 35},
    }

    // 过滤年龄大于等于30的人
    filteredPeople := Filter(people, func(p interface{}) bool {
        person := p.(Person)
        return person.Age >= 30
    }).([]Person)

    fmt.Println(filteredPeople)
}