what does "::" mean in Scala ?

Question

What does :: mean here ?

listeners ::= listener
list = num :: list

Specially I don't understand the "::" operator.

http://www.scala-lang.org/api/2.11.4/index.html#scala.collection.immutable.$colon$colon — Gábor Bakos, Feb 22 '15 at 08:22

score 14 · Accepted Answer · answered Feb 22 '15 at 08:55

14

Its the list cons operator. It creates a new list whose head is first argument and whose tail is contents of the second argument.

answered Feb 22 '15 at 08:55

Gil

1 Answers1