public static CommonSequence <T> By <T>(this T from, T step) where T : struct
{
CommonSequence <T> sequence = ConstructSequence <T>(from);
sequence.Step = step;
return(sequence);
}
public static CommonSequence <T> For <T>(this T from, T length) where T : struct
{
CommonSequence <T> sequence = ConstructSequence <T>(from);
sequence.Count = length;
return(sequence);
}
public static CommonSequence <T> To <T>(this T from, T to) where T : struct
{
CommonSequence <T> sequence = ConstructSequence <T>(from);
sequence.Last = to;
return(sequence);
}
private static CommonSequence <T> ConstructSequence <T>(T first) where T : struct
{
CommonSequence <T> result = null;
if (first is int)
{
result = new IntegerSequence() as CommonSequence <T>;
}
else if (first is double)
{
result = new DoubleSequence() as CommonSequence <T>;
}
if (result == null)
{
throw new ApplicationException("Unsupported sequence type");
}
result.First = first;
return(result);
}
