arrow-optics / arrow.optics.extensions.map.index / index

index

@JvmName("index") fun <K, V, T> PLens<T, T, MapK<K, V>, MapK<K, V>>.~~index~~(i: K): POptional<T, T, V, V> Deprecated: arrow.optics.extensions package is being deprecated, and it will be removed in 0.13.