private void onNewWorld(object sender, EventArgs e)
{
_history = null;
}
internal YearTransactionSummary(TransactionHistory _history)
{
this.history = _history;
}
internal MonthTransactionSummary(TransactionHistory _history)
{
this.history = _history;
}
private static TransactionSummary selectYear(TransactionHistory history)
{
return(history.year);
}
private static TransactionSummary selectMonth(TransactionHistory history)
{
return(history.month);
}
//
// selector methods
//
private static TransactionSummary selectDay(TransactionHistory history)
{
return(history.day);
}