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Konstantin Tskhovrebov
12/12/2019, 3:48 PMHello, is there a way in Kotlin to use property delegates for data classes in constructor?
I want to create something like Swift's
Property Wrapperk
Kris Wong
12/12/2019, 3:51 PMif I understand you correctly, yes: https://kotlinlang.org/docs/reference/properties.html#getters-and-setters
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Big Chungus
12/12/2019, 3:56 PMdata class Entity: InterfaceOfSmth by ClassThatImplementsSomethingOfThatInterface()k
Konstantin Tskhovrebov
12/12/2019, 3:58 PM@Kris Wong no. I didn't find how change getter for data class property 😢
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Big Chungus
12/12/2019, 4:00 PMYou can always add secondary constructor that delegates props from args
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Konstantin Tskhovrebov
12/12/2019, 4:00 PMSwift's
Property Wrapperk
Kris Wong
12/12/2019, 4:01 PMkotlin has the same concept. add a normal property to your data class and provide the getter and setter.
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Konstantin Tskhovrebov
12/12/2019, 4:02 PM@Big Chungus but than i will lost all data class features (like auto
toString()b
Big Chungus
12/12/2019, 4:02 PMNope
You'll just do the conversion of your constructor args at instantiation. Resulting class will still be the same
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Konstantin Tskhovrebov
12/12/2019, 4:36 PMNo. For example:
If i use property wrapper than system log prints property via custom getter.
But data class doesn't use property delegate for generating toString() method.
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Big Chungus
12/12/2019, 4:51 PMThen as @Kris Wong mentiones override getters
This still won't break equals and toString
Remember that every val and var have getters setters behind them
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Konstantin Tskhovrebov
12/12/2019, 9:12 PMNo,
toString()3 Views