map

inline fun <D, T, R> ReadOnlyProperty<D, T>.map(crossinline read: (T) -> R): ReadOnlyProperty<D, R>
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inline fun <D, T> ReadWriteProperty<D, T>.map(crossinline read: (T) -> T): ReadWriteProperty<D, T>
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Map reads from a delegate

inline fun <D, T, R> ReadWriteProperty<D, T>.map(crossinline read: (T) -> R, crossinline write: (R) -> T): ReadWriteProperty<D, R>
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Map reads from and writes to a delegate