Swift – Check if String is Empty
To check if string is empty in Swift, use the String property String.isEmpty
.
isEmpty
property is a boolean value that is True if there are no any character in the String, or False if there is at least one character in the String.
Example
In the following program, we will take an empty string, and check programmatically if the string is empty using String.isEmpty property.
main.swift
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var str = ""
var result = str.isEmpty
print( "Is the string empty? \(result)" )
Output
Is the string empty? true
Example 2 – Non-empty String
In the following program, we will take a string with "Hello World"
value, and check programmatically if the string is not empty using String.isEmpty property.
main.swift
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var str = "Hello World"
var result = str.isEmpty
print( "Is the string empty? \(result)" )
Output
Is the string empty? false
Conclusion
In this Swift Tutorial, we learned how to check if a String is empty or not using String.isEmpty property.