Extra Credit: Create an array of 10 songs.

I got stuck with that one yesterday too. After realizing that += is no longer supported to append to Arrays (in Swift 1.1 that is), I almost gave up frustrated...

It worked then like this though:

var song1 = ["title": "Take on me", "artist": "a-ha", "album": "Hunting high and low"]
var song2 = ["title": "Thursgutter", "artist": "BSF", "album": "Der Chor steht auf"]

var songs = [song1]
songs.append(song2)

I am now able to access particular songs like this:

println(songs[0])
println(songs[1])

For some unknown reason, this does NOT work though:

println(songs.1)

I don't understand why. I also failed on directly accessing a particular dict's value via array index and key.

On cloud 9 since finally getting this one down. Here is what I did:

var As = ["title":"As","artist":"Stevie Wonder","album":"Songs in the key of life"] var runners = [ "title": "Runners", "artist": "Lecrae", "album": "Anomaly"] var billiejean = ["title": "Billie Jean" , "artist": "Michael Jackson", "album": "Thriller"] var nuthin = ["title": "Nuthin", "artist": "Lecrae", "album": "Anomaly"] var babybemine = ["title": "Baby be Mine", "artist": "Michale Jackson", "album": "Thriller"] var Power = ["title": "Power", "artist": "Kanye West", "album": "My Dark Twisted Fantasy"] var wewillrockyou = ["title": "We will rock you", "artist": "Queen", "album": "A night at the opera"] var Exodus = ["title": "Exodus", "artist": "Bob Marley", "album": "Exodus"] var Nothing = ["title": "Nothing", "artist": "Whitney Houston", "album": "Whitney"] var America = ["title": "America", "artist": "Prince", "album": "Around the world in a day"]

var song = (As,runners,billiejean,nuthin,babybemine,Power,wewillrockyou,Exodus,Nothing,America)

// pulling up a song:

song.1 song.4

// correcting Michale Jackson to Michael Jackson:

babybemine.updateValue("Michael Jackson", forKey: "artist")

//but this doesn't seem to go through to the Array, So I used this and it works better:

song.4.updateValue("Michael Jackson", forKey: "artist")

// check to make sure it changed:

song.4

// Using Print Commands:

print(song.4)

// selective print

print(song.4["title"])

// returns "Optional("Baby be Mine")"

// Hope this helps. I had to think about this one. Great lectures. Also thanks for all the help noted above. The initial answers were a great starting point.

Friedemann,

If I'm not mistaken,

println(songs.1)

Doesn't work because dot notation accesses the variables properties. "1" isn't a property. That's why it has to be accessed through [].

That's my guess.

Hmm confused about the above comment ^^ I managed to use dot notation println(songs.3) ... did I do something wrong?

var Hurt = ["title": "Hurt", "artist": "NIN", "album": "Downward Spiral"]
var DopeShow = ["title": "Dope Show", "artist": "Marily Manson", "album": "Mechanical Animals"]
var Fetisha = ["title": "Fetisha", "artist": "Orgy", "album": "Candy Ass"]
var SpecialK = ["title": "Special K", "artist": "Placebo", "album": "Black Market Music"]
var SelfEsteem = ["title": "Self Esteem", "artist":"Offspring", "album":"Smash"]

var songs = (Hurt, DopeShow, Fetisha, SpecialK, SelfEsteem)


//this printed: "Optional("Special K")"
println(songs.3["title"])

here is my code var song1 = ["KY": "Key", "AR": "Artist", "AL": "Album"] var song2 = ["KY2": "Key2", "AR2": "Artist2", "AL2": "Album2"]

var song = [song1,song2]

how can i access the value "key2" from the array song