What is the function of records in C #?

In C#, the record is a new reference type used to declare immutable data objects. Its main purposes include:

1. Simplify the code: Using record allows for a more concise definition of a data object, eliminating the need to manually implement constructor functions, Equals, GetHashCode, and ToString methods.
2. Immutability: Objects declared with the record keyword are immutable, meaning that once created, their property values cannot be changed. This helps ensure that objects will not be accidentally altered during use, enhancing the reliability of the program.
3. Value comparison: The Record automatically generates Equals and GetHashCode methods for attributes, allowing for easy value comparison. Even if two objects are different instances, as long as their attribute values are equal, the Equals method will return true.
4. Destructuring and pattern matching: record supports destructuring operations and pattern matching, making it easy to extract property values from objects and make conditional judgments based on those values.
5. Inheritance and interfaces: a record can inherit from other classes and implement interfaces to expand its functionality. It can serve as a base class for other classes or as a way to implement interfaces.

In summary, the purpose of the record in C# is to provide a concise, immutable, and convenient way to declare data objects for easier comparison and pattern matching, ultimately enhancing code readability and reliability.