Optional String conversion gists

Optional+String.swift

//
//  Optional+String.swift
//
//  Created by Apro on 13/12/19.
//

import Foundation

extension Optional where Wrapped: Numeric & LosslessStringConvertible {
  func stringOrEmpty() -> String {
    if let self = self {
      return String(self)
    }
    return ""
  }
}

extension Optional where Wrapped == Date {
  func stringOrEmpty(formatter: DateFormatter) -> String {
    if let self = self {
      return formatter.string(from: self)
    }
    return ""
  }
}