5
試圖重用Sum
,但得到這個錯誤:無法解決方法琛
cannot resolve method Sum
我怎樣才能改變我的語法
private static void AggregatesData(User user)
{
user.TotalActiveUsers = SumToolbarsData(user.bars,(tb => tb.ActiveUsers));
user.TotalInstalls = SumToolbarsData(user.bars, (tb => tb.Installs));
user.TotalBalance = SumToolbarsData(user.bars, (tb => tb.Balance));
}
private static T SumToolbarsData<T>(List<Bar> bars, Func<Bar, T> selector)
{
return bars.Sum<T>(selector);
}