define :point [
    init: method [x :floating, y :floating][
        this\x: x
        this\y: y
    ]

    string: method [][
        render "point (x: |this\x|, y: |this\y|)"
    ]
]

define :circle [
    init: method [center :point, radius :floating][
        this\center: center
        this\radius: radius
    ]

    string: method [][
        render "circle (center: |this\center|, radius: |this\radius|)"
    ]
]

p: to :point [10.0, 20.0]
c: to :circle @[p, 10.0]

inspect p
inspect c

print p
print c