Get-Init Property vs Get-Only Property in C# [duplicate]

Question

What would the difference in these two code snippets? Both compiles fine with .NET Core 6.

public class Person
{
  public string FirstName { get; init; }

  public Person(string firstName)
  {
    FirstName = firstname;
  }
}

vs

public class Person
{
  public string FirstName { get; }

  public Person(string firstName)
  {
    FirstName = firstname;
  }
}

Answer 1

The init accessor makes immutable objects more flexible by allowing the caller to mutate the members during the act of construction. That means the object's immutable properties can participate in object initializers and thus remove the need for all constructor boilerplate in the type.

For more information read this Doc