One-sided ranges

About 1 min

One-sided ranges 관련

HACKING WITH SWIFT

What's new in Swift?

One-sided ranges | Changes in Swift 4.0

One-sided ranges

Available from Swift 4.0

Last but not least, Swift 4 introduced Python-like one-sided collection slicing, where the missing side is automatically inferred to be the start or end of the collection. This has no effect on existing code because it's a new use for the existing operator, so you don't need to worry about potential breakage.

Here's an example:

let characters = ["Dr Horrible", "Captain Hammer", "Penny", "Bad Horse", "Moist"]
let bigParts = characters[..<3]
let smallParts = characters[3...]
print(bigParts)
print(smallParts)