What if we don’t need to loop through both the keys and the values of a dictionary? 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.

For example:

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

The print() statement in the above snippet will output the following keys:

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

If we printed fruitStand.values, our output would include these values:

[20, 18, 12]

We can use these properties to specify how we want to iterate through a dictionary.

For example, if we only need the names of the fruits to create a list of what we sell, we can iterate through just the keys of fruitStand by appending .keys to the dictionary:

for fruit in fruitStand.keys {
  print(fruit)
}

This would give us an output similar to this:

"Oranges"
"Apples"
"Bananas"

We could append .values to fruitStand to loop through the values of our dictionary and find out the total number of fruit we have in stock:

var total = 0

for fruitStock in fruitStand.values {
  total += fruitStock
}

print(total)  // Prints: 50