toFloat

fun <D> ReadOnlyProperty<D, String>.toFloat(): ReadOnlyProperty<D, Float>
fun <D> ReadWriteProperty<D, String>.toFloat(): ReadWriteProperty<D, Float>
fun <D> ReadOnlyProperty<D, String?>.toFloat(): ReadOnlyProperty<D, Float?>
fun <D> ReadWriteProperty<D, String?>.toFloat(): ReadWriteProperty<D, Float?>