Classes And Objects
A Small Value Holder
This class stores two fields and exposes a computed function.
Point (
x is int
y is int
constructor(x is int, y is int) (
this.x = x
this.y = y
)
distanceSquared() is int (
return x * x + y * y
)
)Point(x int y int constructor(x is inty is int)(this .x = x this .y = y) distanceSquared() is int(return x * x + y * y))
Constructing And Calling
This example creates an instance and calls one of its functions.
Counter (
value is int
constructor(value is int) (
this.value = value
)
advanced(amount is int) is Counter (
return Counter(value + amount)
)
)
nextCounter() is Counter (
counter = Counter(10)
return counter.advanced(5)
)Counter(value int constructor(value is int)(this .value = value) advanced(amount is int) is Counter(return Counter(value + amount))) nextCounter() is Counter(counter = Counter(10) return counter .advanced(5))
Inheritance And Super Access
This example gives a child class a refined description.
Animal (
name is string
constructor(name is string) (
this.name = name
)
description() is string (
return name
)
)
Dog is Animal (
constructor(name is string) (
super(name)
)
description() is string (
return super.description() + " the dog"
)
)Working With An Array Of Instances
This denser example combines construction, member access, arrays, and iteration.
LineItem (
name is string
price is int
constructor(name is string, price is int) (
this.name = name
this.price = price
)
total() is int (
return price
)
)
receiptTotal(items is LineItem[]) is int (
total is var int = 0
items each item (
total += item.total()
)
return total
)LineItem(name string price int constructor(name is stringprice is int)(this .name = name this .price = price) total() is int(return price)) receiptTotal(items is LineItem []) is int(total var int = 0 items each item(total += item .total()) return total)