Swift Tutorials

How to check if a Set is Empty in Swift

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How to check if a Set is Empty in Swift ?

Answer

To check if a Set is empty in Swift, you can use the isEmpty property or the count property.

✐ Examples

1 Check if Set is Empty Using isEmpty Property

In this example,

We define a set named `mySet` containing elements of a specific type.
We check if the set is empty using the `isEmpty` property.
If the `isEmpty` property returns `true`, then the set is empty; otherwise, it contains elements.

Swift Program

// Define set
var mySet: Set<String> = []

// Check if set is empty using isEmpty property
if mySet.isEmpty {
    print("Set is empty")
} else {
    print("Set is not empty")
}

Output

Set is empty

2 Check if Set is Empty Using count Property

In this example,

We define a set named `mySet` containing elements of a specific type.
We check if the count of elements in the set is equal to zero using the `count` property.
If the count is zero, then the set is empty; otherwise, it contains elements.

Swift Program

// Define set
var mySet: Set<String> = []

// Check if set is empty using count property
if mySet.count == 0 {
    print("Set is empty")
} else {
    print("Set is not empty")
}

Output

Set is empty

Summary

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

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How to check if a Set is Empty in Swift

How to check if a Set is Empty in Swift ?

Answer

✐ Examples

1 Check if Set is Empty Using isEmpty Property

Swift Program

Output

2 Check if Set is Empty Using count Property

Swift Program

Output

Summary

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