Method _setLogMethod

src/neural-network.js:352–360

* * @param log * if a method is passed in method is used * if false passed in nothing is logged * @returns error

(log)

   * @returns error
   */
  _setLogMethod(log) {
    if (typeof log === 'function'){
      this.trainOpts.log = log;
    } else if (log) {
      this.trainOpts.log = console.log;
    } else {
      this.trainOpts.log = false;
    }
  }

  /**
   *