How to Check if a Dictionary is Empty in Swift - Step by Step Examples

How to Check if a Dictionary is Empty in Swift ?

Answer

To check if a dictionary is empty in Swift, you can use the `isEmpty` property. An empty dictionary has an `isEmpty` property that returns `true`.

✐ Examples

1 Checking if a Dictionary is Empty Using the `isEmpty` Property

We can check if a dictionary is empty in Swift using the `isEmpty` property. This example demonstrates how to check if a dictionary is empty and print a message based on the result.

For example,

We start by declaring and initializing a dictionary named myDictionary.
We use the `isEmpty` property to check if the dictionary is empty.
We print a message based on whether the dictionary is empty or not.

Swift Program

var myDictionary: [Int: String] = [:]

// Check if the dictionary is empty using the isEmpty property
if myDictionary.isEmpty {
    print("The dictionary is empty.")
} else {
    print("The dictionary is not empty.")
}

Output

The dictionary is empty.

2 Checking if a Non-Empty Dictionary is Empty Using the `isEmpty` Property

We can check if a non-empty dictionary is empty in Swift using the `isEmpty` property. This example demonstrates how to check if a dictionary with key-value pairs is empty and print a message based on the result.

For example,

We start by declaring and initializing a dictionary named myDictionary with some key-value pairs.
We use the `isEmpty` property to check if the dictionary is empty.
We print a message based on whether the dictionary is empty or not.

Swift Program

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

// Check if the dictionary is empty using the isEmpty property
if myDictionary.isEmpty {
    print("The dictionary is empty.")
} else {
    print("The dictionary is not empty.")
}

Output

The dictionary is not empty.

Summary

In this tutorial, we learned How to Check if a Dictionary is Empty in Swift language with well detailed examples.

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How to Check if a Dictionary is Empty in Swift - Step by Step Examples