package gw.currency

uses gw.pl.currency.MonetaryAmount

@ReadOnly
enhancement GWArrayOfMonetaryAmountCoreEnhancement : MonetaryAmount[] {

  /**
   * Sums up the MonetaryAmount contents,
   *   which must all be of the specified currency.
   */
  function sum(currency : Currency) : MonetaryAmount {
    return this.sum(currency, \ amt -> amt)
  }


  /**
   * Return the average of the MonetaryAmount contents,
   *   which must all be of the specified currency.
   */
  function average(currency : Currency) : MonetaryAmount {
    return this.toList().average(currency, \ amt -> amt)
  }
}