How to convert a Substring to a String
Swift version: 5.1
Swift has a dedicated Substring type (String.SubSequence) that is designed to hold slices of strings, which is a performance optimization: when you store part of a string in a different variable, Swift can simply point the substring at the parent string rather than copy all the data.
However, while substrings can be used in many of the same ways as regular strings, they aren’t the same – if you have a function that accepts a String as a parameter, you simply cannot send it a Substring.
To fix this, you can wrap your substring in a String initializer like this:
let quote = "The revolution will be Swift"
let substring = quote.dropFirst(23)
let realString = String(substring)SAVE 20% ON iOS CONF SG The largest iOS conference in Southeast Asia is back in Singapore for the 5th time in January 2020, now with two days of workshops plus two days of talks on SwiftUI, Combine, GraphQL, and more! Save a massive 20% on your tickets by clicking on this link.
Available from iOS 8.0
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