text: /**
   * Talisman metrics/manhattan
   * ===========================
   *
   * Function computing the Manhattan distance.
   *
   * [Reference]: https://en.wikipedia.org/wiki/Taxicab_geometry
   *
   * [Tags]: metric, vector space.
   */
  
  /**
   * Function returning the Manhattan distance between two vectors.
   *
   * @param  {mixed}  a     - The first vector.
   * @param  {mixed}  b     - The second vector.
   * @return {number}       - The Manhattan distance between a & b.
   *
   * @throws {Error} The function expects vector of same dimensions.
   */
  export default function manhattan(a, b) {
    if (a.length !== b.length)
      throw Error('talisman/metrics/distance/manhattan: the given vectors are not of the same dimension.');
  
    let distance = 0;
  
    for (let i = 0, l = a.length; i < l; i++)
      distance += Math.abs(a[i] - b[i]);
  
    return distance;
  }
  