5
试图重用Sum
,但得到这个错误:无法解决方法琛
cannot resolve method Sum
我怎样才能改变我的语法
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);
}