Scala ++ operator in lists

Question

What does the " ++ " operator do on sets and lists? For example:

(row(r) ++ column(c))

Thanks in advance.

Please look this up in the documentation: http://www.scala-lang.org/api/current/index.html#scala.collection.immutable.List — Akos Krivachy, Dec 04 '13 at 00:28

Andrew Jones · Answer 1 · 2013-12-04T00:37:27.233

1

++ combines the contents of two lists. The new list will contain the contents of row(r) followed by the contents of column(c)

If row(r) has the contents [1, 2] and column(c) has the contents [3, 4], the new list will contain [1, 2, 3, 4]

edited Dec 04 '13 at 00:37

answered Dec 04 '13 at 00:29

Andrew Jones

1 Answers1