How to loop through letters in a string

Written by Paul Hudson    @twostraws

You can loop through every character in a string by treating it as an array. Thanks to Swift's extended support for international languages and emoji, this works great no matter what kind of language you're using.

This code prints out each character one at a time:

let str = "sunday, monday, happy days"
for char in str {
    print("Found character: \(char)")
}

Available from iOS 7.0

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This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.