package main

import (
	"fmt"
	"math"
)

type Vertex struct {
	X, Y float64
}

func (v Vertex) Abs() float64 {
	return math.Sqrt(v.X*v.X + v.Y*v.Y)
}

func main() {
	v := Vertex{3, 4}
	fmt.Println(v.Abs())
}

class Vertex {
    public x: number
    public y: number
    constructor(x: number, y: number) {
        this.x = x;
        this.y = y;
    }
    Abs(): number {
        return Math.sqrt(this.x * this.x + this.y * this.y);
    }
}

const v = new Vertex(3, 4);
console.log(v.Abs());

import 'dart:math';

class Vertex {
  final double x;
  final double y;
  Vertex(this.x, this.y);
  double Abs() {
    return sqrt(this.x * this.x + this.y * this.y);
  }
}

main() {
  var v = Vertex(3, 4);
  print(v.Abs());
}