Here’s an open source library extending Swift’s string capability further called Swift String Tools from Jamal Kharrat.
Some of the functions the included String helpers allow you to perform are:
- Get the language of the string
- Check if a string can be used in a tweet
- Check if a string contains a Date
- Convert a string of dates to an array of dates
- Check if a string contains a URL
You can find Swift String Tools on Github here.
A nice collection of Swift String helpers.