Iterate over items in Tuple

Question

I have this method with three loops:

    public void Print(Tuple<List<DateTime>, List<double>, List<string>> dataToPrint)
    {
        foreach (var item in dataToPrint.Item1)
        {
            Console.WriteLine(item);
        }
        foreach (var item in dataToPrint.Item2)
        {
            Console.WriteLine(item);
        }
        foreach (var item in dataToPrint.Item3)
        {
            Console.WriteLine(item);
        }
    }

Is it possible to use only one loop to print all the items with contents of the Lists on the screen?

Answer 1

You can, of course, concat all lists into one sequence of object or string items, but this concatenation will not make your code more readable. But you can create simple extension method which dumps content of any sequence to the console:

public static void Dump<T>(this IEnumerable<T> source)
{
    foreach(var item in source)
       Console.WriteLine(item);
}

And your code will look like (no loops at all):

public void Print(Tuple<List<DateTime>, List<double>, List<string>> dataToPrint)
{
    dataToPrint.Item1.Dump();
    dataToPrint.Item2.Dump();
    dataToPrint.Item3.Dump();
}

I would also use named parameters, custom type or value tuple to pass these three values to the method.