Swift String extension for subscripting with `Int` rather than `String.Index`

subscript-with-int-string-extension.swift

// This doesn't consider multi-code Unicode characters like 🤖
extension String {
    subscript(range: Range<Int>) -> String {
        // Convert Int range to String.Index-based range
        let begin = String.Index(encodedOffset: range.lowerBound)
        let end = String.Index(encodedOffset: range.upperBound)
        return String(self[begin...end])
    }
}

"PIZZA"[3..<4]
"PIZZA"[0..<1]
"🍔BURGERTIME"[0..<0]