arrow-optics / arrow.optics / arrow.core.Tuple2 / pFirst

pFirst

fun <A, B, R> Tuple2.Companion.~~pFirst~~(): PLens<Tuple2<A, B>, Tuple2<R, B>, A, R> Deprecated: Use the pairPFirst function exposed in the Lens’ companion object

PLens to focus into the first value of a arrow.core.Tuple2