Scala: what is the best way to append an element to an Array?

Question

Say I have an Array[Int] like

val array = Array( 1, 2, 3 )

Now I would like to append an element to the array, say the value

Answer 1

You can use :+ to append element to array and +: to prepend it:

0 +: array :+ 4

should produce:

res3: Array[Int] = Array(0, 1, 2, 3, 4)

It's the same as with any other implementation of Seq.