社交媒体平台代码例题

Go 语言代码示例，用于实现一个简单的社交媒体平台：

package main

import (
	"fmt"
	"strings"
	"time"
)

type User struct {
	ID        int
	Username  string
	Email     string
	Followers []int
}

type Post struct {
	ID        int
	Content   string
	Timestamp time.Time
	UserID    int
}

type SocialMediaPlatform struct {
	Users map[int]User
	Posts []Post
}

func main() {
	socialMedia := SocialMediaPlatform{
		Users: make(map[int]User),
		Posts: []Post{},
	}

	// 添加一些用户
	socialMedia.addUser(User{
		ID:       1,
		Username: "user1",
		Email:    "[email protected]",
	})
	socialMedia.addUser(User{
		ID:       2,
		Username: "user2",
		Email:    "[email protected]",
	})

	// 发布一些帖子
	socialMedia.addPost(Post{
		ID:        1,
		Content:   "Hello, World!",
		Timestamp: time.Now(),
		UserID:    1,
	})
	socialMedia.addPost(Post{
		ID:        2,
		Content:   "This is a sample post.",
		Timestamp: time.Now(),
		UserID:    2,
	})

	// 显示所有用户的帖子
	for _, user := range socialMedia.Users {
		fmt.Println(user.Username, "的帖子：")
		posts := socialMedia.getUserPosts(user.ID)
		for _, post := range posts {
			fmt.Println(post.Content)
		}
		fmt.Println()
	}
}

func (sm *SocialMediaPlatform) addUser(user User) {
	sm.Users[user.ID] = user
}

func (sm *SocialMediaPlatform) addPost(post Post) {
	sm.Posts = append(sm.Posts, post)
}

func (sm *SocialMediaPlatform) getUserPosts(userID int) []Post {
	var userPosts []Post
	for _, post := range sm.Posts {
		if post.UserID == userID {
			userPosts = append(userPosts, post)
		}
	}
	return userPosts
}

func (sm *SocialMediaPlatform) searchPostsByKeyword(keyword string) []Post {
	var result []Post
	for _, post := range sm.Posts {
		if strings.Contains(post.Content, keyword) {
			result = append(result, post)
		}
	}
	return result
}

这个代码示例实现了一个简单的社交媒体平台，包括用户和帖子的结构体、添加用户和帖子的方法，以及根据用户和关键字搜索帖子的功能。示例中还展示了如何添加用户和帖子，并显示每个用户发布的帖子。希望这个示例对您有所帮助！如果您有任何其他问题，我会很乐意回答。