NumberFormatter.swift 934 B

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  1. //
  2. // NumberFormatter.swift
  3. // RileyLink
  4. //
  5. // Copyright © 2017 Pete Schwamb. All rights reserved.
  6. //
  7. import Foundation
  8. extension NumberFormatter {
  9. func decibleString(from decibles: Int?) -> String? {
  10. if let decibles = decibles, let formatted = string(from: NSNumber(value: decibles)) {
  11. return String(format: LocalizedString("%@ dB", comment: "Unit format string for an RSSI value in decibles"), formatted)
  12. } else {
  13. return nil
  14. }
  15. }
  16. func percentString(from percent: Int?) -> String? {
  17. if let percent = percent, let formatted = string(from: NSNumber(value: percent)) {
  18. return String(format: LocalizedString("%@%%", comment: "Unit format string for an value in percent"), formatted)
  19. } else {
  20. return nil
  21. }
  22. }
  23. func string(from number: Double) -> String? {
  24. return string(from: NSNumber(value: number))
  25. }
  26. }