Trait

A Trait represents the capabilities of an object. It describes fields and methods an object should have, and can optionally define default behavior that a Class can implement.

let Vehicle be trait with
  name,
  wheels, and
  drive as method as
    print "{own's name} go brr"

let Car be class implementing just Vehicle defined with
  name as "car", and
  wheels as 4

let car be new Car
do car's drive # car go brr

Traits can also implement other traits, and in doing so may implement default values and behavior to fields and methods that aren't implemented in its parent traits.

let Health be trait with
  health, and
  heal as method with just amount as
    update own's health to own's health plus amount

let Entity be trait implementing just Health with
  name, and
  health as 100

let Person be class implementing just Entity with just name defined with
  name as name, and
  greet as method as
    print "{own's name} says hi"

Traits can also be used to test the capabilities of an object.

if some_object implements Health do
  some_object's heal 50

Constructor

Creates a new Trait copying the given trait.

Getters

Returns a trait's property names as a list of strings.

Returns a trait's getter names as a list of strings.

Returns a trait's method names as a list of strings.

A getter that returns an Iterator to iterate over the trait properties.