כיתות וירטואליות ב-TypeScript: יישום מבוסס-טיפוסים ללמידה מרחוק

            
interface Student {
  id: number;
  firstName: string;
  lastName: string;
  email: string;
  courses: string[];
}

function enrollStudent(student: Student, courseId: string): void {
  // Implementation to enroll the student in the course
  console.log(`Enrolling student ${student.firstName} ${student.lastName} in course ${courseId}`);
}

const newStudent: Student = {
  id: 123,
  firstName: "Alice",
  lastName: "Smith",
  email: "alice.smith@example.com",
  courses: []
};

enrollStudent(newStudent, "Math101");

            

              
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class Course {
  courseId: string;
  name: string;
  instructor: string;
  students: Student[] = [];

  constructor(courseId: string, name: string, instructor: string) {
    this.courseId = courseId;
    this.name = name;
    this.instructor = instructor;
  }

  addStudent(student: Student): void {
    this.students.push(student);
  }

  getStudentCount(): number {
    return this.students.length;
  }
}

const math101 = new Course("Math101", "Introduction to Mathematics", "Dr. Jane Doe");
math101.addStudent(newStudent);
console.log(`Number of students in ${math101.name}: ${math101.getStudentCount()}`);

            

              
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async function fetchData(url: string): Promise {
  const response = await fetch(url);
  const data: T = await response.json();
  return data;
}

interface Assignment {
  id: number;
  title: string;
  dueDate: string;
}

async function getAssignments(): Promise {
  const assignments = await fetchData("/api/assignments");
  return assignments;
}

getAssignments().then(assignments => {
  console.log("Assignments:", assignments);
});

            

              
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interface StudentUser {
  type: "student";
  id: number;
  name: string;
  studentId: string;
}

interface TeacherUser {
  type: "teacher";
  id: number;
  name: string;
  employeeId: string;
}

type User = StudentUser | TeacherUser;

function greetUser(user: User): void {
  switch (user.type) {
    case "student":
      console.log(`Hello Student ${user.name} (ID: ${user.studentId})`);
      break;
    case "teacher":
      console.log(`Hello Professor ${user.name} (Employee ID: ${user.employeeId})`);
      break;
    default:
      //Should not happen if types are set up correctly
      console.log("Unknown user type");
  }
}

const studentUser: StudentUser = {
  type: "student",
  id: 1,
  name: "Bob Johnson",
  studentId: "S12345"
};

const teacherUser: TeacherUser = {
  type: "teacher",
  id: 2,
  name: "Dr. Alice Brown",
  employeeId: "E67890"
};

greetUser(studentUser);
greetUser(teacherUser);

            

              
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interface CourseData {
  id: string;
  name: string;
  description: string;
}

async function fetchCourses(): Promise {
  try {
    const response = await fetch("/api/courses");
    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }
    const courses: CourseData[] = await response.json();
    return courses;
  } catch (error) {
    console.error("Error fetching courses:", error);
    return []; // Return an empty array in case of error
  }
}

fetchCourses().then(courses => {
  console.log("Courses:", courses);
});

            

              
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import { Server, Socket } from "socket.io";

interface DrawEvent {
  x: number;
  y: number;
  color: string;
  size: number;
}

const io = new Server(3000, {
  cors: {
    origin: "*",
    methods: ["GET", "POST"]
  }
});

io.on("connection", (socket: Socket) => {
  console.log("A user connected");

  socket.on("draw", (data: DrawEvent) => {
    socket.broadcast.emit("draw", data);
  });

  socket.on("disconnect", () => {
    console.log("A user disconnected");
  });
});

console.log("Server running on port 3000");

            

              
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import { io, Socket } from "socket.io-client";

interface DrawEvent {
  x: number;
  y: number;
  color: string;
  size: number;
}

const socket: Socket = io("http://localhost:3000");
const canvas = document.getElementById("whiteboard") as HTMLCanvasElement;
const ctx = canvas.getContext("2d")!;

canvas.addEventListener("mousedown", (e) => {
  let drawing = true;

  canvas.addEventListener("mouseup", () => drawing = false);
  canvas.addEventListener("mouseout", () => drawing = false);

  canvas.addEventListener("mousemove", (e) => {
    if (!drawing) return;

    const x = e.clientX - canvas.offsetLeft;
    const y = e.clientY - canvas.offsetTop;

    const drawEvent: DrawEvent = {
      x: x,
      y: y,
      color: "black",
      size: 5,
    };

    socket.emit("draw", drawEvent);
    drawOnCanvas(drawEvent);
  });
});

socket.on("draw", (data: DrawEvent) => {
  drawOnCanvas(data);
});

function drawOnCanvas(data: DrawEvent) {
  ctx.fillStyle = data.color;
  ctx.fillRect(data.x, data.y, data.size, data.size);
}

            

              
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interface Question {
  id: number;
  text: string;
  options: string[];
  correctAnswer: number;
}

interface QuizResult {
  studentId: number;
  score: number;
  totalQuestions: number;
}

function gradeQuiz(answers: number[], questions: Question[]): QuizResult {
  let score = 0;
  for (let i = 0; i < questions.length; i++) {
    if (answers[i] === questions[i].correctAnswer) {
      score++;
    }
  }

  return {
    studentId: 123, // Example student ID
    score: score,
    totalQuestions: questions.length,
  };
}

const quizQuestions: Question[] = [
  {
    id: 1,
    text: "What is the capital of France?",
    options: ["London", "Paris", "Berlin", "Rome"],
    correctAnswer: 1,
  },
  {
    id: 2,
    text: "What is 2 + 2?",
    options: ["3", "4", "5", "6"],
    correctAnswer: 1,
  },
];

const studentAnswers: number[] = [1, 1]; // Correct answers

const quizResult = gradeQuiz(studentAnswers, quizQuestions);
console.log("Quiz Result:", quizResult);

            

              
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interface LearningModule {
  id: number;
  title: string;
  content: string;
  prerequisites: number[];
}

interface StudentProgress {
  studentId: number;
  completedModules: number[];
}

function recommendNextModule(studentProgress: StudentProgress, modules: LearningModule[]): LearningModule | null {
  // Find modules that the student hasn't completed
  const incompleteModules = modules.filter(module => !studentProgress.completedModules.includes(module.id));

  // Find modules whose prerequisites have been met
  const availableModules = incompleteModules.filter(module => {
    return module.prerequisites.every(prerequisite => studentProgress.completedModules.includes(prerequisite));
  });

  // Return the first available module, or null if none are available
  return availableModules.length > 0 ? availableModules[0] : null;
}

const learningModules: LearningModule[] = [
  {
    id: 1,
    title: "Introduction to Algebra",
    content: "...",
    prerequisites: [],
  },
  {
    id: 2,
    title: "Solving Equations",
    content: "...",
    prerequisites: [1],
  },
  {
    id: 3,
    title: "Graphing Linear Equations",
    content: "...",
    prerequisites: [2],
  },
];

const studentProgress: StudentProgress = {
  studentId: 456,
  completedModules: [1],
};

const nextModule = recommendNextModule(studentProgress, learningModules);

if (nextModule) {
  console.log(`Recommended next module: ${nextModule.title}`);
} else {
  console.log("No more modules available.");
}

            

              
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