How to Check if Two Dictionaries are Equal in Swift

How to Check if Two Dictionaries are Equal in Swift ?

Answer

To check if two dictionaries are equal in Swift, you can use the equality operator `==`. This allows you to determine if the dictionaries contain the same key-value pairs.


✐ Examples

1 Checking if Two Dictionaries are Equal Using `==` Operator

We can check if two dictionaries are equal in Swift using the equality operator `==`. This example demonstrates how to declare and initialize two dictionaries, use the `==` operator to compare them, and print whether they are equal.

For example,

  1. We start by declaring and initializing two dictionaries named firstDict and secondDict with integer keys and string values.
  2. We use the `==` operator to compare the dictionaries.
  3. We print whether the dictionaries are equal.

Swift Program

let firstDict: [Int: String] = [
    1: "One",
    2: "Two",
    3: "Three"
]

let secondDict: [Int: String] = [
    1: "One",
    2: "Two",
    3: "Three"
]

// Check if the dictionaries are equal using == operator
let areEqual = firstDict == secondDict

// Print whether the dictionaries are equal
if areEqual {
    print("The dictionaries are equal.")
} else {
    print("The dictionaries are not equal.")
}

Output

The dictionaries are equal.

2 Checking if Two Dictionaries are Not Equal

We can check if two dictionaries are not equal in Swift using the equality operator `==`. This example demonstrates how to declare and initialize two dictionaries, use the `==` operator to compare them, and print whether they are not equal.

For example,

  1. We start by declaring and initializing two dictionaries named firstDict and secondDict with integer keys and string values.
  2. We use the `==` operator to compare the dictionaries.
  3. We print whether the dictionaries are not equal.

Swift Program

let firstDict: [Int: String] = [
    1: "One",
    2: "Two",
    3: "Three"
]

let secondDict: [Int: String] = [
    1: "One",
    2: "Two",
    3: "Four"
]

// Check if the dictionaries are not equal using == operator
let areEqual = firstDict == secondDict

// Print whether the dictionaries are not equal
if !areEqual {
    print("The dictionaries are not equal.")
} else {
    print("The dictionaries are equal.")
}

Output

The dictionaries are not equal.

Summary

In this tutorial, we learned How to Check if Two Dictionaries are Equal in Swift language with well detailed examples.


More Swift Dictionaries Tutorials

  1. How to create an Empty Dictionary in Swift ?
  2. How to create a Dictionary with Initial Key-Value Pairs in Swift ?
  3. How to Print a Dictionary in Swift ?
  4. How to Add a Key-Value Pair to a Dictionary in Swift ?
  5. How to Set a Default Value for a Key in a Dictionary in Swift ?
  6. How to Update the Value for a Key in a Dictionary in Swift ?
  7. How to Check if a Dictionary is Empty in Swift ?
  8. How to Check if a Key Exists in a Dictionary in Swift ?
  9. How to Check if a Value Exists in a Dictionary in Swift ?
  10. How to Get the Value Associated with a Key in a Dictionary in Swift ?
  11. How to Remove a Key-Value Pair from a Dictionary in Swift ?
  12. How to Remove Key-Value Pairs from a Dictionary Based on Values in Swift ?
  13. How to Clear all Key-Value Pairs from a Dictionary in Swift ?
  14. How to Iterate over Keys in a Dictionary in Swift ?
  15. How to Iterate over Values in a Dictionary in Swift ?
  16. How to Iterate over Entries (Key-Value Pairs) in a Dictionary in Swift ?
  17. How to Get the Size (Number of Key-Value Pairs) of a Dictionary in Swift ?
  18. How to Convert a Dictionary to an Array of Keys in Swift ?
  19. How to Convert a Dictionary to an Array of Values in Swift ?
  20. How to Convert a Dictionary to an Array of Key-Value Pairs in Swift ?
  21. How to Merge Two Dictionaries in Swift ?
  22. How to Clone a Dictionary in Swift ?
  23. How to Check if Two Dictionaries are Equal in Swift ?
  24. How to Sort a Dictionary by Keys in Swift ?
  25. How to Sort a Dictionary by Values in Swift ?
  26. How to Filter a Dictionary Based on Keys in Swift ?
  27. How to Filter a Dictionary Based on Values in Swift ?
  28. How to Reduce Values in a Dictionary to a Single Value in Swift ?
  29. How to Convert an Array of Key-Value Pairs to a Dictionary in Swift ?
  30. How to Convert a Dictionary to a JSON String in Swift ?
  31. How to Convert a JSON String to a Dictionary in Swift ?
  32. How to Swap Keys and Values in a Dictionary in Swift ?
  33. How to Create a Dictionary of Dictionaries in Swift ?
  34. How to Iterate Over a Dictionary of Dictionaries in Swift ?