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darkf/lolnominaltyping.ts

Created March 26, 2016 10:04
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lolnominaltyping.ts
interface Point2D {
x: number;
y: number;
}
interface Point3D extends Point2D {
z: number;
}
function f(pt: Point2D) {}
let pt: Point3D = {x:1, y:2, z:3};
f(pt); // oh hey it works on 3d points too!
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