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iOS Swift 2.0 Collections and Control Flow Dictionaries Working with Dictionaries

Asad Chishty
Asad Chishty
422 Points
Posted by Asad Chishty
Asad Chishty
422 Points

How would I assign the value to a constant for applePie?

I tried the following and they didn't work;

let applePie = ["AP"]

iceCream["AP"] = applePie

I'm not understanding how to pull the data from the dictionary and then assign it to a constant. When I try the first one, let applePie = ["AP"] it says to pull the key from the dictionary instead of just assigning it to a string.

dictionary.swift 
// Enter your code below

var iceCream: [String:String] = [
  "CC": "Chocolate Chip",
  "AP": "Apple Pie",
  "PB": "Peanut Butter"
  ]

  iceCream["RR"] = "Rocky Road"

  iceCream["AP"] =  "applePie"

1 Answer

Jennifer Nordell
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STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! You're supposed to declare a constant and retrieve the value from the dictionary. Take a look:

var iceCream: [String:String] = [
  "CC": "Chocolate Chip",
  "AP": "Apple Pie",
  "PB": "Peanut Butter"
  ]

  iceCream["RR"] = "Rocky Road"
  let applePie = iceCream["AP"]

Here we update our dictionary to include the "Rocky Road flavor". Then we declare a constant with let and retrieve that value from iceCream at the key "AP". This will be assigned back into our applePie constant.

Hope this helps! :sparkles: