How can I save variables with value type Measurement using Realm Swift?












1















Does Realm Swift support saving and retrieving data with value type Measurement? Here is the class structure of the data I'm trying to save:



class Race: Object {
@objc dynamic var raceDistance: Measurement<UnitLength>?
@objc dynamic var nettTime = Measurement<UnitDuration>?
}









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    1















    Does Realm Swift support saving and retrieving data with value type Measurement? Here is the class structure of the data I'm trying to save:



    class Race: Object {
    @objc dynamic var raceDistance: Measurement<UnitLength>?
    @objc dynamic var nettTime = Measurement<UnitDuration>?
    }









    share|improve this question

























      1












      1








      1








      Does Realm Swift support saving and retrieving data with value type Measurement? Here is the class structure of the data I'm trying to save:



      class Race: Object {
      @objc dynamic var raceDistance: Measurement<UnitLength>?
      @objc dynamic var nettTime = Measurement<UnitDuration>?
      }









      share|improve this question














      Does Realm Swift support saving and retrieving data with value type Measurement? Here is the class structure of the data I'm trying to save:



      class Race: Object {
      @objc dynamic var raceDistance: Measurement<UnitLength>?
      @objc dynamic var nettTime = Measurement<UnitDuration>?
      }






      ios swift properties realm persistence






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      asked Nov 21 '18 at 5:42









      Sarvesh Sarvesh

      277




      277
























          1 Answer
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          Measurements themselves are not supported by Realm, but you can store their constituent parts.



          A Measurement is just a value with a unit. So for raceDistance, you could store



          let raceDistance = RealmOptional<Double>()
          @objc dynamic var raceDistanceUnit: String? = nil


          And you can add a computed property like this to get the Measurement<UnitLength> from the value and the unit:



          var raceDistanceMeasurement: Measurement<UnitLength>? {
          get {
          if let distance = raceDistance.value, let unit = raceDistanceUnit {
          return Measurement(value: distance, unit: UnitLength(symbol: unit))
          }
          return nil
          }

          set {
          raceDistance.value = newValue?.value
          raceDistanceUnit = newValue?.unit.symbol
          }
          }





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            1 Answer
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            active

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            1














            Measurements themselves are not supported by Realm, but you can store their constituent parts.



            A Measurement is just a value with a unit. So for raceDistance, you could store



            let raceDistance = RealmOptional<Double>()
            @objc dynamic var raceDistanceUnit: String? = nil


            And you can add a computed property like this to get the Measurement<UnitLength> from the value and the unit:



            var raceDistanceMeasurement: Measurement<UnitLength>? {
            get {
            if let distance = raceDistance.value, let unit = raceDistanceUnit {
            return Measurement(value: distance, unit: UnitLength(symbol: unit))
            }
            return nil
            }

            set {
            raceDistance.value = newValue?.value
            raceDistanceUnit = newValue?.unit.symbol
            }
            }





            share|improve this answer




























              1














              Measurements themselves are not supported by Realm, but you can store their constituent parts.



              A Measurement is just a value with a unit. So for raceDistance, you could store



              let raceDistance = RealmOptional<Double>()
              @objc dynamic var raceDistanceUnit: String? = nil


              And you can add a computed property like this to get the Measurement<UnitLength> from the value and the unit:



              var raceDistanceMeasurement: Measurement<UnitLength>? {
              get {
              if let distance = raceDistance.value, let unit = raceDistanceUnit {
              return Measurement(value: distance, unit: UnitLength(symbol: unit))
              }
              return nil
              }

              set {
              raceDistance.value = newValue?.value
              raceDistanceUnit = newValue?.unit.symbol
              }
              }





              share|improve this answer


























                1












                1








                1







                Measurements themselves are not supported by Realm, but you can store their constituent parts.



                A Measurement is just a value with a unit. So for raceDistance, you could store



                let raceDistance = RealmOptional<Double>()
                @objc dynamic var raceDistanceUnit: String? = nil


                And you can add a computed property like this to get the Measurement<UnitLength> from the value and the unit:



                var raceDistanceMeasurement: Measurement<UnitLength>? {
                get {
                if let distance = raceDistance.value, let unit = raceDistanceUnit {
                return Measurement(value: distance, unit: UnitLength(symbol: unit))
                }
                return nil
                }

                set {
                raceDistance.value = newValue?.value
                raceDistanceUnit = newValue?.unit.symbol
                }
                }





                share|improve this answer













                Measurements themselves are not supported by Realm, but you can store their constituent parts.



                A Measurement is just a value with a unit. So for raceDistance, you could store



                let raceDistance = RealmOptional<Double>()
                @objc dynamic var raceDistanceUnit: String? = nil


                And you can add a computed property like this to get the Measurement<UnitLength> from the value and the unit:



                var raceDistanceMeasurement: Measurement<UnitLength>? {
                get {
                if let distance = raceDistance.value, let unit = raceDistanceUnit {
                return Measurement(value: distance, unit: UnitLength(symbol: unit))
                }
                return nil
                }

                set {
                raceDistance.value = newValue?.value
                raceDistanceUnit = newValue?.unit.symbol
                }
                }






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                answered Nov 21 '18 at 6:54









                SweeperSweeper

                69.3k1074141




                69.3k1074141
































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