import Foundation import KeychainAccess enum APIError : Error { case accessTokenExpired case networkError // Add more error cases as needed } class APIManager { private let keychain = Keychain (service: "com.example.app.refreshToken" ) private let refreshTokenKey = "refreshToken" private var accessToken: String ? func callAPI < T : Codable >( urlString : String , method : String , parameters : [ String : Any ] ? , completion : @escaping ( Result < T , APIError >) -> Void ) { guard let url = URL (string: urlString) else { completion(.failure(.networkError)) return } var request = URLRequest (url: url) request.httpMethod = method // Add access token to the request headers if available if let token = accessToken { request.setValue( "Bearer \(token) " , forHTTPHeaderField: "Aut...
Find Out How Many Number of Vowels & Vowels in a Sentence & Remove duplicate elements
func findVowelAndCount(str: String) -> (vowelCount: Int, vowelStr: String) {
let vowels = "aeious"
var vowelsCounts = 0
var vowelsArray: [String] = []
var volsStr = ""
for i in str.lowercased(){
if vowels.contains(i){
vowelsCounts += 1
if !vowelsArray.contains("\(i)"){
vowelsArray.append("\(i)")
}
}
volsStr = vowelsArray.joined()
}
return (vowelsCounts, volsStr)
}
//MARK: - Output
let vowelsOutput = findVowelAndCount(str: "How to convert character array into string in Swift?")
print(vowelsOutput) //(vowelCount: 16, vowelStr: "oeais")
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