On: Swift 5: start your engines

[dep_b]

I think strings in Swift are primarily meant to be very correct above being fast or easy to use. It's more strict than both Python 2 and 3. Handling of languages that use really complex character compositions springs to mind.

[mahyarm → dep_b]

There is no obvious way to turn that off fortunately, when you don't need it.

[LeoNatan25 → mahyarm]

I think it's coming. Part of the String Manifesto Apple has is that they want to give both worlds.