How to Check if String contains only Alphabets in Swift - Step by Step Examples

How to Check if String contains only Alphabets in Swift ?

Answer

To check if a string contains only alphabets in Swift, you can use a combination of regular expressions and the allSatisfy method of the String class.

✐ Examples

1 Check if String 'HelloWorld' Contains Only Alphabets

In this example,

We create a string named str with a string value.
We use the allSatisfy method of the string object str to check if all characters in the string are alphabetic.
The allSatisfy method takes a closure that checks if each character is an alphabet using the isLetter property.
Finally, we print the result to standard output.

Swift Program

import Foundation

let str = "HelloWorld"
let isAlphabetsOnly = str.allSatisfy { $0.isLetter }
print("String contains only alphabets: \(isAlphabetsOnly)")

Output

String contains only alphabets: true

2 Check if String 'Hello123' Contains Only Alphabets

In this example,

We create a string named str1 with a string value.
We use the allSatisfy method of the string object str1 to check if all characters in the string are alphabetic.
The allSatisfy method takes a closure that checks if each character is an alphabet using the isLetter property.
Finally, we print the result to standard output.

Swift Program

import Foundation

let str1 = "Hello123"
let isAlphabetsOnly = str1.allSatisfy { $0.isLetter }
print("String contains only alphabets: \(isAlphabetsOnly)")

Output

String contains only alphabets: false

Summary

In this tutorial, we learned How to Check if String contains only Alphabets in Swift language with well detailed examples.

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How to Check if String contains only Alphabets in Swift - Step by Step Examples

How to Check if String contains only Alphabets in Swift ?

Answer

✐ Examples

1 Check if String 'HelloWorld' Contains Only Alphabets

Swift Program

Output

2 Check if String 'Hello123' Contains Only Alphabets

Swift Program

Output

Summary

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