Back to list comprehensions. You can have more than one generator in a list
comprehension. Try this in erl:
1>[X*Y||X<-[3,5,7],Y<-[2,4,6]].[6,12,18,10,20,30,14,28,42]
Using what you’ve learned from this example, write a module named cards
that contains a function make_deck/0. The function will generate a deck
of cards as a list 52 tuples in this form:
[{"A","Clubs"},
{"A","Diamonds"},
{"A","Hearts"},
{"A","Spades"},
{2,"Clubs"},
{2,"Diamonds"},
{2,"Hearts"},
{2,"Spades"},
...
{"K", "Clubs"},
{"K", "Diamonds"},
{"K", "Hearts"},
{"K", "Spades"}]Note
When you run this function, your output will not show the entire list; it will show something that ends like this. Don’t freak out.
{7,"Clubs"},
{7,"Diamonds"},
{7,[...]},
{7,...},
{...}|...]If you want to see the full list, use this function.
show_deck(Deck) ->lists:foreach(fun(Item) -> io:format("~p~n", [Item]) end, Deck).
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