scala list append code example

Example 1: scala list append to end

Append to end of list
List(1,2,3) :+ 4

Results in List[Int] = List(1, 2, 3, 4)

Example 2: scala add to list

def::[B >: A](elem: B): List[B]
Adds an element at the beginning of this list.
	elem is the element to prepend.

	returns a list which contains x as first element 
	and which continues with this list. 

Example:
1 :: List(2, 3) = List(2, 3).::(1) = List(1, 2, 3)