How to reference a child array based on the parent array's key?

Question

I have the following dictionary:

var deckDictionary = [
            "card1": ["ace","hearts"],
            "card2": ["ace","spades"],
            "card3": ["ace","diamonds"],
            "card4": ["ace","clubs"],
]

What I want to do is set cardSuit2 to be equal to the 2nd object in the array with key "card2" like so (pseudo-code):

var cardKey2 = "card2"
var cardSuit2 = whatever the card suit value is at cardKey2 ([[deckDictionary[1]][1]]?)

So for instance in this case, cardSuit2 would be equal to the 2nd object in the array with key "card2", so "spades". How would I go about doing this?

@Wain I tried var cardSuit1 = ([[deckDictionary[1]][1]]), and it gives me an error stating Cannot subscript a value of type '[String : Array<String>]' with an index of type 'Int' — Andrew
– Andrew, Commented Oct 28, 2015 at 21:07
@ghobs91what about var cardSuit1 = deckDictionary["card2"]![1] — Alex Terreaux
– Alex Terreaux, Commented Oct 28, 2015 at 21:21
@ghobs9 Just make sure that you are indexing the dictionary with a key you know will exist. If that is not the case, you'll need to check if deckDictionary["card2"] is nil. — Alex Terreaux
– Alex Terreaux, Commented Oct 28, 2015 at 21:22

Alexey Pichukov · Accepted Answer · 2015-10-28 20:12:23Z

1

If you just want to get the value of the element that is pointed out in the question it is possible to do so:

var cardKey2 = "card2"
var cardSuit2 = deckDictionary[cardKey2]?.last

answered Oct 28, 2015 at 20:12

Alexey Pichukov

3,4052 gold badges21 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to reference a child array based on the parent array's key?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related