summaryrefslogtreecommitdiff
path: root/src/lqueue.erl
diff options
context:
space:
mode:
authorSimon MacMullen <simon@rabbitmq.com>2015-02-04 12:03:36 +0000
committerSimon MacMullen <simon@rabbitmq.com>2015-02-04 12:03:36 +0000
commitfbf68e455a6ccb5d842b02e175960da8edc08c3a (patch)
tree26d0b43630d8816e7e23af39bf6ef7f36b63bf62 /src/lqueue.erl
parent0bbd9baaac321552b14afaeb5fc36bc44f0feef2 (diff)
parent4dbe7eeba5b4f8a9657135f7d0930ff82c4c64b9 (diff)
downloadrabbitmq-server-git-fbf68e455a6ccb5d842b02e175960da8edc08c3a.tar.gz
Merge bug26579
Diffstat (limited to 'src/lqueue.erl')
-rw-r--r--src/lqueue.erl4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/lqueue.erl b/src/lqueue.erl
index 62f60d5ffb..941941de2e 100644
--- a/src/lqueue.erl
+++ b/src/lqueue.erl
@@ -16,6 +16,10 @@
-module(lqueue).
+%% lqueue implements a subset of Erlang's queue module. lqueues
+%% maintain their own length, so lqueue:len/1
+%% is an O(1) operation, in contrast with queue:len/1 which is O(n).
+
-export([new/0, is_empty/1, len/1, in/2, in_r/2, out/1, out_r/1, join/2,
foldl/3, foldr/3, from_list/1, to_list/1, peek/1, peek_r/1]).