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added version added + union, diff and sym_diff filters

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Signed-off-by: Brian Coca <briancoca+dev@gmail.com>
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Brian Coca 2013-11-19 14:37:53 -05:00
parent 79145b6a78
commit 246689c2fd
1 changed files with 15 additions and 4 deletions
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19
docsite/rst/playbooks_variables.rst
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@ -171,17 +171,28 @@ The variable value will be used as is, but the template evaluation will raise an
Set Theory Filters
--------------------
These mostly deal with set (lists), no filter for union as this already works::
All these functions return a unique set from sets or lists.
.. versionadded:: 1.4
{{ list1 + list2 }}
To get a unique set from a list::
{{ list1 |unique }}
To get a union of two lists::
{{ list1 | union(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::
To get the difference of 2 lists (items in 1 that don't exist in 2)::
{{ list1 |unique }}
{{ list1 |difference(list2)}}
To get the symetric difference of 2 lists (items exclusive to each list)::
{{ list1 |symetric_difference(list2)}}
.. _other_useful_filters: