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...
An Enum & Enumeration consists of integral constants
"An enumeration is a user-define data type which consists of a set of related value" Is used to define enum keyword"
enum type { const1, const2, const3, .......}
enum week {
case Monday
case Tuesday
.....
case Sunday
}
case India
case America
case Russia
case Chaina
}
var power = Country.America
power = .America
switch power {
case .India:
print("India Country is No 4")
case .America:
print("America Country is No 1")
case . Russia:
print("Russia Country is No 2")
case . Chaina:
print("Chaina Country is No 3")
}
Output is America Country is No 1
"An enumeration is a user-define data type which consists of a set of related value" Is used to define enum keyword"
enum type { const1, const2, const3, .......}
enum week {
case Monday
case Tuesday
.....
case Sunday
}
Swift Example :-
enum Country {case India
case America
case Russia
case Chaina
}
var power = Country.America
power = .America
switch power {
case .India:
print("India Country is No 4")
case .America:
print("America Country is No 1")
case . Russia:
print("Russia Country is No 2")
case . Chaina:
print("Chaina Country is No 3")
}
Output is America Country is No 1
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