outcome/nz.adjmunro.outcome.result.members/andThen

andThen

inline fun <In, Out> KotlinResult<In>.andThen(onSuccess: (In) -> Out): KotlinResult<Out>

Transforms value inside a resultOf scope.

Success ->wraps&returns the result of onSuccess transformation.
Failure ->wraps&returns the original Throwable.
If onSuccess throws an exception, it will be caught & wrapped by resultOf.

This is the resultOf alternative to Result.mapCatching.

resultOf { 4 }
  .andThen { it * 2 } // KotlinResult.success(8)
  .andThen { check(false) { it } } // KotlinResult.failure(IllegalStateException("4"))
  .andThen { 16 } //  Remains KotlinResult.failure(IllegalStateException("4"))

andThen

See also