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iOS Swift Basics (retired) Collections What is a Dictionary?

Posted by David Perkins
David Perkins
2,028 Points

How would you go about solving the extra credit question? Q: Create an array of 10 songs where each song is a dictionary

Help?

3 Answers

krilnon
krilnon
1,458 Points

I can think of two simple ways to do it: 

var songs = [
    ["title": "title1", "artist": "artist1", "album": "album1"],
    ["title": "title2", "artist": "artist2", "album": "album2"],
    ["title": "title3", "artist": "artist3", "album": "album3"],
    // 4, 5, 6,... 10, etc.
]

var songs:[Dictionary<String, String>] = []

for i in (1...10) {
    songs.append(["title": "title\(i)", "artist": "artist\(i)", "album": "album\(i)"])
}
David Perkins
David Perkins
2,028 Points

Rock solid. Thanks for your help brochacho.

Cody Iddings
Cody Iddings
1,328 Points

@krilnon, for the first one, I would I call out just the 1st "artist"?

Moath Maharmah
Moath Maharmah
3,613 Points
Moath Maharmah
Moath Maharmah
3,613 Points

I think is might be useful for you

//: Create an array of 10 songs where each song is a dictionary. The dictionary contains the following keys: title, artist and album.

import UIKit

//Dictionary 1 var songsDic = [ "title": "Song Title 1", "artist": "Artist Name 1", "album": "Album Name 1"]

//Dictionary 2 var songsDic2 = [ "title": "Song Title 2", "artist": "Artist Name 2", "album": "Album Name 2"]

//Dictionary 3 var songsDic3 = [ "title": "Song Title 3", "artist": "Artist Name 3", "album": "Album Name 3"]

//Aray of three songs where each song is a dictionary var songs = [ songsDic, songsDic2, songsDic3]

Lauren Hibbs
Lauren Hibbs
1,872 Points
Lauren Hibbs
Lauren Hibbs
1,872 Points

This is what I did for my extra credit. I didn't really want to do ten songs though. The first four variables are my dictionary items, with title, artist and album defined. The fifth variable is my array which contains variables which each represent a dictionary.

import UIKit

var noSunlight = ["Title":"No Sunlight" ,"Artist":"DCFC","Album":"Narrow Stairs"]

var longDivision = ["Title":"Long Division" ,"Artist":"DCFC","Album":"Narrow Stairs"]

var blackSun = ["Title":"Black Sun" ,"Artist":"DCFC","Album":"Kintsugi"]

var nugget = ["Title":"Nugget" ,"Artist":"Cake","Album":"Fashion Nugget"]

var songs = [noSunlight,longDivision,blackSun,nugget]

// just to test out that my array works...

blackSun["Title"] // "Black Sun"

songs[0]["Album"] // "Narrow Stairs"

songs[3]["Artist"] // "Cake"