Scala Map implementation keeping entries in insertion order?

Question

In Java, I use LinkedHashMap for this purpose. The documentation of Java's LinkedHashMap is very clear that it has "predictable iteration order" and I need the same in Scala.

Scala has ListMap and LinkedHashMap, but the documentation on what they do exactly is poor.

Question: is Scala's LinkedHashMap or ListMap the implementation to use for this purpose? If not, what other options are available besides using the Java's LinkedHashMap directly?

Answer 1

From the LinkedHashMap Scaladoc page:

• "This class implements mutable maps using a hashtable. The iterator and all traversal methods of this class visit elements in the order they were inserted."