index of string in array swift
let arr = ["a","b","c","a"]
let indexOfA = arr.firstIndex(of: "a") // 0
let indexOfB = arr.lastIndex(of: "a") // 3index of string in array swift
let arr = ["a","b","c","a"]
let indexOfA = arr.firstIndex(of: "a") // 0
let indexOfB = arr.lastIndex(of: "a") // 3string index in swift
extension String {
subscript(_ n: Int) -> Character {
return self[self.index(self.startIndex, offsetBy: n)]
}
}
let str = "Hello World"
print(str[0]) // H
print(str[4]) // o
print(str[6]) // wCopyright © 2021 Codeinu
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