public Pecuniam GetCurrent(DateTime dt, float rate)
{
if (IsEmpty)
{
return(Pecuniam.Zero);
}
if (DataSet.All(x => x.AtTime > dt))
{
return(Pecuniam.Zero);
}
var prev = FirstTransaction;
var rest = DataSet.Skip(1);
var bal = prev.Cash.Amount;
foreach (var t in rest)
{
var tAtTime = t.AtTime;
//does dt fall between this transaction and the last
if (t.AtTime > dt)
{
tAtTime = dt;
}
//the interest from prev to next
var days = (tAtTime - prev.AtTime).TotalDays;
bal = bal.PerDiemInterest(rate, days, DaysPerYear);
//the current transaction is after the dt so we just want the interest
if (tAtTime == dt)
{
break;
}
bal += t.Cash.Amount;
prev = t;
}
//is there a gap in time between last recorded transaction and query dt
if (LastTransaction.AtTime < dt)
{
//calc the interest for that number of days
var days = (dt - LastTransaction.AtTime).TotalDays;
bal = bal.PerDiemInterest(rate, days, DaysPerYear);
}
return(new Pecuniam(bal));
}
public bool All(Expression <Func <T, bool> > expression)
{
return(DataSet.All(expression));
}
private bool AllExamplesHaveSameClassification(DataSet ds)
{
string classification = ds.GetExample(0).TargetValue();
return(ds.All(e => e.TargetValue().Equals(classification)));
}
