fun interface ReadOnlyProperty<in T, out V>
Base interface that can be used for implementing property delegates of read-only properties.
This is provided only for convenience; you don't have to extend this interface as long as your property delegate has methods with the same signatures.
T - the type of object which owns the delegated property.
V - the type of the property value.
Returns the value of the property for the given object.
abstract operator fun getValue( thisRef: T, property: KProperty<*> ): V
Base interface that can be used for implementing property delegates of read-write properties.
interface ReadWriteProperty<in T, V> : ReadOnlyProperty<T, V>
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https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.properties/-read-only-property/index.html