public bool Equals(CashEntry other)
{
if (ReferenceEquals(null, other))
{
return(false);
}
if (ReferenceEquals(this, other))
{
return(true);
}
return(Denomination.Equals(other.Denomination));
}
public override int GetHashCode() => Denomination != null?Denomination.GetHashCode() : 0;
public CashEntry(Denomination denomination, int quantity)
{
Denomination = denomination ?? throw new ArgumentNullException($"{nameof(denomination)} cannot be null");
Quantity = quantity >= 0 ? quantity : throw new ArgumentException($"{nameof(quantity)} cannot be less than zero");
}