Question

how would you convert this code

poker_deck = [r+s for r in '23456789TJQKA' for s in 'SHDC']

to C#?

I came out with this:

char[] figures = "23456789TJQKA".ToCharArray();
char[] suites = "SHDC".ToCharArray();
List<string> deck = new List<string>();

foreach (var figure in figures)
{
    foreach (var suite in suites)
    {
        deck.Add(string.Format("{0}{1}", figure, suite));
    }
}

what do you think?
I would like to do the same in one simple and readable line

Answer 1

I think fluent LINQ would be a very readable solution as well as the solution that resembles your original Python code most:

var cards = from r in "23456789TJQKA"
            from s in "SHDC"
            select "" + r + s;

Of course you can also write it in one line:

var cards = from r in "23456789TJQKA" from s in "SHDC" select "" + r + s;

Because I code Python as well, this pleases my eye, seeing that it’s an almost literate translation of your comprehension 🙂