From 79145b6a7892858d6794f3684b91fe2f85c218d0 Mon Sep 17 00:00:00 2001 From: Brian Coca Date: Mon, 18 Nov 2013 23:40:29 -0500 Subject: [PATCH] updated docs to add new filters Signed-off-by: Brian Coca --- docsite/rst/playbooks_variables.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/docsite/rst/playbooks_variables.rst b/docsite/rst/playbooks_variables.rst index a2486fc510a..1318f8e73ae 100644 --- a/docsite/rst/playbooks_variables.rst +++ b/docsite/rst/playbooks_variables.rst @@ -167,6 +167,22 @@ This allows an explicit check with this feature off:: The variable value will be used as is, but the template evaluation will raise an error if it is undefined. +.. _set_theory_filters: + +Set Theory Filters +-------------------- +These mostly deal with set (lists), no filter for union as this already works:: + + {{ list1 + list2 }} + +To get the intersection of 2 lists (unique list of all items in both):: + + {{ list1 |intersect(list2)}} + +To get a unique set from a list:: + + {{ list1 |unique }} + .. _other_useful_filters: Other Useful Filters