crosswalkNull

inline fun <B> crosswalkNull(f: (A) -> B?): Option<B>?

Deprecated

This API is niche and will be removed in the future. If this method is crucial for you, please let us know on the Arrow Github. Thanks! https://github.com/arrow-kt/arrow/issues Prefer using the Option DSL or fold

Replace with

import arrow.core.Some
getOrNull()?.let { value -> f(value)?.let(::Some) }