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走进GitHub的知识海洋:《HelloGitHub》第89期精彩纷呈

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探索 GitHub 宝库:第 89 期精彩纷呈

大家好,我是你们的编程老友。欢迎来到《HelloGitHub》的第 89 期分享。这次,我们为大家带来了 GitHub 上另一批精选项目,涵盖各种编程语言和技术领域。准备好开启一段精彩的探索之旅吧!

一、实战项目:从入门到精通

  1. Python:用 Python 玩转数字图像处理

    项目地址:https://github.com/tensorflow/models/tree/master/research/deeplab

    代码示例:

    import tensorflow as tf
    import numpy as np
    
    # 加载图像
    image = tf.io.read_file('image.jpg')
    image = tf.image.decode_jpeg(image, channels=3)
    
    # 创建一个 DeepLab 模型
    model = tf.keras.models.load_model('deeplab_model.h5')
    
    # 预测图像中的分割结果
    segmentation_mask = model.predict(image)
    
    # 显示分割结果
    plt.imshow(segmentation_mask)
    plt.show()
    
  2. Java:打造你的第一个 Java Web 应用程序

    项目地址:https://github.com/spring-projects/spring-boot

    代码示例:

    @SpringBootApplication
    public class MySpringBootApplication {
        public static void main(String[] args) {
            SpringApplication.run(MySpringBootApplication.class, args);
        }
    }
    
    @RestController
    class MyController {
        @GetMapping("/")
        public String hello() {
            return "Hello, world!";
        }
    }
    
  3. Go:编写并发程序的艺术

    项目地址:https://github.com/golang/go

    代码示例:

    package main
    
    import (
        "fmt"
        "sync"
    )
    
    var wg sync.WaitGroup
    
    func main() {
        for i := 0; i < 10; i++ {
            wg.Add(1)
            go func(i int) {
                fmt.Println(i)
                wg.Done()
            }(i)
        }
        wg.Wait()
    }
    
  4. C/C++:打造高效的 C/C++ 应用程序

    项目地址:https://github.com/llvm/llvm-project

    代码示例:

    #include <iostream>
    #include <vector>
    
    using namespace std;
    
    int main() {
        vector<int> vec;
        for (int i = 0; i < 1000000; i++) {
            vec.push_back(i);
        }
        for (int i = 0; i < 1000000; i++) {
            vec[i] += 1;
        }
        return 0;
    }
    
  5. S:函数式编程的魅力

    项目地址:https://github.com/ocaml/ocaml

    代码示例:

    let sum = List.fold_left (fun acc x -> acc + x) 0 [1; 2; 3; 4; 5]
    let map = List.map (fun x -> x * x) [1; 2; 3; 4; 5]
    

二、入门教程:从零基础到进阶高手

  1. Python:从零基础到 Python 高手

    项目地址:https://github.com/trekhleb/learn-python

    代码示例:

    print("Hello, world!")
    x = 5
    if x > 0:
        print("x is positive")
    else:
        print("x is non-positive")
    
  2. Java:Java 入门到精通

    项目地址:https://github.com/eugenp/tutorials

    代码示例:

    public class HelloWorld {
        public static void main(String[] args) {
            System.out.println("Hello, world!");
        }
    }
    
  3. Go:Go 语言快速入门

    项目地址:https://github.com/golang/go/wiki/Learn

    代码示例:

    package main
    
    import "fmt"
    
    func main() {
        fmt.Println("Hello, world!")
    }
    
  4. C/C++:C/C++ 入门指南

    项目地址:https://github.com/learncpp/learncpp

    代码示例:

    #include <iostream>
    
    using namespace std;
    
    int main() {
        cout << "Hello, world!" << endl;
        return 0;
    }
    
  5. S:函数式编程入门

    项目地址:https://github.com/fsharp/fsharp

    代码示例:

    let sum = List.fold (fun (acc, x) -> acc + x) 0 [1; 2; 3; 4; 5]
    let map = List.map (fun x -> x * x) [1; 2; 3; 4; 5]
    

三、黑科技:颠覆你对编程的认知

  1. Python:用 Python 玩转机器学习

    项目地址:https://github.com/scikit-learn/scikit-learn

    代码示例:

    from sklearn.datasets import load_iris
    from sklearn.model_selection import train_test_split
    from sklearn.linear_model import LogisticRegression
    
    # 加载数据集
    iris = load_iris()
    X, y = iris.data, iris.target
    
    # 划分训练集和测试集
    X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2)
    
    # 创建逻辑回归模型
    model = LogisticRegression()
    
    # 训练模型
    model.fit(X_train, y_train)
    
    # 评估模型
    print(model.score(X_test, y_test))
    
  2. Java:用 Java 打造分布式系统

    项目地址:https://github.com/apache/zookeeper

    代码示例:

    import org.apache.zookeeper.ZooKeeper;
    
    public class ZookeeperExample {
        public static void main(String[] args) throws Exception {
            ZooKeeper zk = new ZooKeeper("localhost:2181", 3000, null);
            zk.create("/my_node", "Hello, world!".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
            System.out.println("Node created: " + zk.exists("/my_node", false));
        }
    }
    
  3. Go:用 Go 打造微服务

    项目地址:https://github.com/grpc/grpc-go

    代码示例:

    package main
    
    import (
        "context"
        "fmt"
        "log"
    
        "google.golang.org/grpc"
        pb "github.com/grpc/grpc-go/examples/helloworld/helloworld"
    )
    
    func main() {
        conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())
        if err != nil {
            log.Fatalf("Did not connect: %v", err)
        }
        defer conn.Close()
        client := pb.NewGreeterClient(conn)
    
        req := &pb.HelloRequest{
            Name: "John",
        }
        resp, err := client.SayHello(context.Background(), req)
        if err != nil {
            log.Fatalf("Could not greet: %v", err)
        }
        fmt.Println(resp.Message)
    }
    
  4. C/C++:用 C/C++ 打造高性能应用程序

    项目地址:https://github.com/facebook/folly

    代码示例:

    #include <folly/io/async/EventBase.h>
    #include <folly/io/async/AsyncServerSocket.h>
    
    void onAccept(folly::AsyncSocket::UniquePtr socket) {
        // 处理连接...
    }
    
    int main() {
        folly::EventBase eventBase;
        folly::AsyncServerSocket serverSocket(&eventBase, 9898);
        serverSocket.setAcceptCallback(onAccept);
        eventBase.loop();
        return 0;
    }
    
  5. **S:用