Define a mutable record - vilinski/nemerle GitHub Wiki

Define a mutable record

Category: Defining Types
Description: Define a mutable record
Code:

using Nemerle;
using System;
using System.Console;

[Record]
class Employee 
{
  public Name : string;
  public StartDate : string;
  public mutable Salary : double;
}

def steve = Employee(name = "Steve", startDate = "01 Jan 2000", salary = 30000.0);
def joe   = Employee("Joe", "25 Dec 2001", 45000.0);

def giveRaise(emp, increase)
{
  emp.Salary *= 1.0 + increase;
  WriteLine($"$(emp.Name) : Salary = $(emp.Salary)");
}

giveRaise(steve, 0.05);
giveRaise(joe,   0.10);

Execution Result:

Steve : Salary = 31500
Joe : Salary = 49500