How to Iterate over Values in a Dictionary in Swift - Step by Step Examples

How to Iterate over Values in a Dictionary in Swift ?

Answer

To iterate over the values in a dictionary in Swift, you can use a `for-in` loop to loop through the `values` property of the dictionary. This allows you to access each value individually.

✐ Examples

1 Iterating over Values Using a `for-in` Loop

We can iterate over the values in a dictionary in Swift using a `for-in` loop. This example demonstrates how to loop through the values of a dictionary and print each value.

For example,

We start by declaring and initializing a dictionary named myDictionary with integer keys and string values.
We use a `for-in` loop to iterate over the `values` property of the dictionary.
We print each value inside the loop.

Swift Program

var myDictionary: [Int: String] = [
    1: "One",
    2: "Two",
    3: "Three"
]

// Iterate over the values in the dictionary
print("Values in the dictionary:")
for value in myDictionary.values {
    print("Value: \(value)")
}

Output

Values in the dictionary:
Value: One
Value: Two
Value: Three

2 Iterating over Values and Accessing Corresponding Keys

We can iterate over the values in a dictionary in Swift using a `for-in` loop and access the corresponding keys. This example demonstrates how to loop through the values of a dictionary and print each value along with its associated key.

For example,

We start by declaring and initializing a dictionary named myDictionary with integer keys and string values.
We use a `for-in` loop to iterate over the `values` property of the dictionary.
Inside the loop, we access and print the key associated with each value.

Swift Program

var myDictionary: [Int: String] = [
    1: "One",
    2: "Two",
    3: "Three"
]

// Iterate over the values in the dictionary and access corresponding keys
print("Values and keys in the dictionary:")
for value in myDictionary.values {
    if let key = myDictionary.first(where: { $0.value == value })?.key {
        print("Key: \(key), Value: \(value)")
    }
}

Output

Values and keys in the dictionary:
Key: 1, Value: One
Key: 2, Value: Two
Key: 3, Value: Three

Summary

In this tutorial, we learned How to Iterate over Values in a Dictionary in Swift language with well detailed examples.

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