.keys & .values - Dictionaries

We can use the properties .keys and .values to create collections of the keys and values of a dictionary that we can then loop through.

The .keys property stores a collection of dictionary keys, while the .values property stores a collection of dictionary values.

EXAMPLE:

var fruitStand = [
  "Apples": 12,
  "Bananas": 20,
  "Oranges": 18
]
print(fruitStand.keys)

OUTPUT:

["Bananas", "Oranges", "Apples"]

If we printed fruitStand.values, our output would include these values: [20, 18, 12]  

EXAMPLE: 

var lemonadeStand = [
  "April": 8.50,
  "May": 12.75,
  "June": 22.50,
  "July": 38.25, 
  "August": 32.50,
  "September": 11.50
]

var total: Double = 0.0

// Add your code below 🍋
for monthlyProfit in lemonadeStand.values {
total = total + monthlyProfit
}

print("Total profits are \(total)")

OUTPUT: 

Total profits are 126.0