CSHARP

c# record

public record Person
{
    public string LastName { get; }
    public string FirstName { get; }

    public Person(string first, string last) => (FirstName, LastName) = (first, last);
}

record keyword c#

//a record is like a simple way to declare a class

public record Person(string name,int age);

Person p1=new person("John",21);
Person p2=new person("Jane",24);

c# record

public sealed record Student : Person
{
    public int Level { get; }

    public Student(string first, string last, int level) : base(first, last) => Level = level;
}

c# record

public record Teacher : Person
{
    public string Subject { get; }

    public Teacher(string first, string last, string sub)
        : base(first, last) => Subject = sub;
}