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Mar 25th, 2017
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  1. module StaleUpdater exposing (..)
  2.  
  3.  
  4. type alias StaleUpdater =
  5. { stale : Bool
  6. , updating : Bool
  7. }
  8.  
  9.  
  10. new : StaleUpdater
  11. new =
  12. { stale = False
  13. , updating = False
  14. }
  15.  
  16.  
  17. setStale : StaleUpdater -> StaleUpdater
  18. setStale su =
  19. { su | stale = True }
  20.  
  21.  
  22. startingUpdate : StaleUpdater -> StaleUpdater
  23. startingUpdate su =
  24. { updating = True, stale = False }
  25.  
  26.  
  27. needUpdate : StaleUpdater -> Bool
  28. needUpdate su =
  29. su.stale && not su.updating
  30.  
  31.  
  32. updatedOk : StaleUpdater -> StaleUpdater
  33. updatedOk su =
  34. { su | updating = False }
  35.  
  36.  
  37. updateFailed : StaleUpdater -> StaleUpdater
  38. updateFailed su =
  39. { stale = True, updating = False }
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