Swift version: 5.2
Swift strings don't have a built-in way to convert to a
Double, but their
NSString counterparts do. To convert between strings and doubles, just do this:
let myString = "556" let myFloat = (myString as NSString).doubleValue
SPONSORED ViRE offers discoverable way of working with regex. It provides really readable regex experience, code complete & cheat sheet, unit tests, powerful replace system, step-by-step search & replace, regex visual scheme, regex history & playground. ViRE is available on Mac & iPad.
Available from iOS 7.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.