Add a header but don't replace existing header(s).
(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]
.
Message headers map.
Header names are case-insensitive. For example, get("accept") is the same as get("Accept").
The map is a multi-map. Use getAll() to get all values for a key. Use add() to append a key-value.