PlanPoint.swift

struct PlanPoint: Equatable {
	var x, y: Int
}

func == (left: PlanPoint, right: PlanPoint) -> Bool {
	return left.x == right.x && left.y == right.y
}

private var points: Array<PlanPoint> = []

points.append(PlanPoint(x: 2, y: 1))
points.append(PlanPoint(x: 2, y: 2))
points.append(PlanPoint(x: 2, y: 3))
points.append(PlanPoint(x: 2, y: 4))
points.append(PlanPoint(x: 2, y: 5))
points.append(PlanPoint(x: 2, y: 6))

let p = PlanPoint(x: 2, y: 3)

print(points)

if let n = points.index(of: p) {
	points.remove(at: n)
}

print(points)