Operator Overloading

• operator overloading
• serious math-y applications want operator overloading
• newtype interfaces ("traits")
• binary Add, Subtract, Multiply, Divide, etc.
• unary Plus, Negate
• operators dispatch through standard interfaces on the left operand only; the reverse operand order needs its own implementation

1import { Add } from "destack:ops";2 3struct Vector2 { x: float64; y: float64; }4 5extension of Vector2 implements Add<Vector2> {6    type Output = Vector2;7    add(this, other: Vector2): Vector2 {8        Vector2 { x: this.x + other.x, y: this.y + other.y }9    }10}