toInt

fun <D> ReadOnlyProperty<D, String>.toInt(): ReadOnlyProperty<D, Int>
fun <D> ReadWriteProperty<D, String>.toInt(): ReadWriteProperty<D, Int>
fun <D> ReadOnlyProperty<D, String?>.toInt(): ReadOnlyProperty<D, Int?>
fun <D> ReadWriteProperty<D, String?>.toInt(): ReadWriteProperty<D, Int?>