toCollection

fun <T, C : MutableCollection<in T>> Array<out T>.toCollection(destination: C): C(source)
fun <C : MutableCollection<in Byte>> ByteArray.toCollection(destination: C): C(source)
fun <C : MutableCollection<in Int>> IntArray.toCollection(destination: C): C(source)
fun <C : MutableCollection<in Long>> LongArray.toCollection(destination: C): C(source)
fun <C : MutableCollection<in Char>> CharArray.toCollection(destination: C): C(source)
fun <T, C : MutableCollection<in T>> Iterable<T>.toCollection(destination: C): C(source)

Appends all elements to the given destination collection.

Since Kotlin

1.0