How to Check if String starts with Specific Prefix in Swift - Step by Step Examples

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How to Check if String starts with Specific Prefix in Swift ?

Answer

In Swift, you can use the 'hasPrefix' method of the String class to check if a string starts with a specific prefix.

✐ Examples

1 Check if String contains specific Prefix using 'hasPrefix' method

In this example,

We create a function 'startsWithPrefix' that takes a string and a prefix as input.
We use the 'hasPrefix' method of the string object to check if the string starts with the specified prefix.
If the string starts with the prefix, 'true' is returned; otherwise, 'false'.
Finally, we print the result.

Swift Program

func startsWithPrefix(_ str: String, _ prefix: String) -> Bool {
    return str.hasPrefix(prefix)
}

let str = "Hello World"
let prefix = "Hello"
let startsWith = startsWithPrefix(str, prefix)
print("String starts with prefix '\(prefix)': \(startsWith)")

Output

String starts with prefix 'Hello': true

Summary

In this tutorial, we learned How to Check if String starts with Specific Prefix in Swift language with well detailed examples.