(Changed in version 2.8.0) + creates a new map. Use += to add an element to this map and return that map itself.
(Changed in version 2.8.0) + creates a new map. Use += to add an element to this map and return that map itself.
(Changed in version 2.8.0) ++ creates a new map. Use ++= to add an element to this map and return that map itself.
(Changed in version 2.8.0) - creates a new map. Use -= to remove an element from this map and return that map itself.
(Changed in version 2.8.0) - creates a new map. Use -= to remove an element from this map and return that map itself.
(Changed in version 2.8.0) -- creates a new map. Use --= to remove an element from this map and return that map itself.
(Changed in version 2.8.0) keys returns Iterable[A] rather than Iterator[A].
(Changed in version 2.9.0) The behavior of scanRight has changed. The previous behavior can be reproduced with scanRight.reverse.
(Changed in version 2.9.0) transpose throws an IllegalArgumentException if collections are not uniformly sized.
(Changed in version 2.8.0) values returns Iterable[B] rather than Iterator[B].
(Since version 2.8.0) use iterator' instead
(Since version 2.8.0) use head' instead
(Since version 2.8.0) use headOption' instead
(Since version 2.8.0) use mapValues' instead
(Since version 2.8.0) use view' instead
(Since version 2.8.0) Use remove' instead
A mutable Map to contain multiple IterateeRefs.
This Map differs from the mutable Map within Scala's standard library by automatically including any keys used to lookup an IterateeRef. The 'refFactory' is used to provide the default value for new keys.