Contents

object Flattener {

    fun flatten(unflattened: Collection<Any?>): List<Any> {
        return unflattened.filterNotNull().fold(mutableListOf(), { accum, element -> accum.addFlattened(element); accum })
    }

    fun MutableCollection<Any>.addFlattened(item: Any) = if (item is Collection<*>) this.addAll(flatten(item)) else this.add(item)

}

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.179	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.178	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.177	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.176	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.175	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.174	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.173	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.172	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.171	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.170	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.169	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.167	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.166	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.165	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.164	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.163	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.162	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.161	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt
trackler-2.2.1.160	tracks/kotlin/exercises/flatten-array/.meta/src/reference/kotlin/Flattener.kt