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17 lines
464 B
Python
17 lines
464 B
Python
Point = Class {x = Int; y = Int}
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Point.
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new x, y = Point::__new__ {x; y}
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norm self = self::x**2 + self::y**2
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Point|Point <: Add(Point)|.
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Output = Point
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__add__ self, other: Point =
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Point.new(self::x + other::x, self::y + other::y)
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Point|Point <: Eq(Point)|.
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__eq__ self, other: Point =
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self::x == other::x and self::y == other::y
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p = Point.new 1, 2
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q = Point.new 3, 4
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r = p + q
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assert r == Point.new 4, 6
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assert r.norm() == 52
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