chaiscript_oop.chai

// ChaiScript has its own simple object model and works well with object
// oriented C++


// There is no difference between a function and a method, it's just syntactic sugar

var s = "mystring".size() // returns 8
var s2 = size("mystring") // returns 8

// class syntax

class MyClass
{
  // user data
  var data

  // constructor
  def MyClass(x)
  {
    this.data = x
  }
  
  // method
  def getStuff(y)
  {
    return this.data + y
  }
}

var obj = MyClass(10)
obj.getStuff(15) // returns 25


// You can extend user defined or C++ classes with additional functionality
def string::isStringLong()
{
  return this.size() > 10;
}

print("Hello".isStringLong()) // returns false
print("Hello World".isStringLong()) // returns true

// You can also extend the user defined type above:
def MyClass::getMoreStuff(d)
{
  return this.data * d
}

print(obj.getMoreStuff(10)) // returns 100

Is there a difference when using var or attr as a class member?