This is a small change, but one guaranteed to make a lot of people happy: strings are collections again. This means you can reverse them, loop over them character-by-character, map() and flatMap() them, and more. For example:
let quote = "It is a truth universally acknowledged that new Swift versions bring new features."
let reversed = quote.reversed()
for letter in quote {
print(letter)
}This change was introduced as part of a broad set of amendments called the String Manifesto.
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Other changes in Swift 4.0…
- Encoding and decoding data using Codable
- Multi-line string literals
- Improved keypaths for key-value coding
- Improved dictionary functionality
- One-sided ranges
Download all Swift 4.0 changes as a playground Link to Swift 4.0 changes
