Added recipe to appendix for some basic math ops
Project: http://git-wip-us.apache.org/repos/asf/tinkerpop/repo Commit: http://git-wip-us.apache.org/repos/asf/tinkerpop/commit/6971e644 Tree: http://git-wip-us.apache.org/repos/asf/tinkerpop/tree/6971e644 Diff: http://git-wip-us.apache.org/repos/asf/tinkerpop/diff/6971e644 Branch: refs/heads/TINKERPOP-1602 Commit: 6971e644ffc0306a968c43f055a7849761108f60 Parents: 0938ebd Author: Stephen Mallette <sp...@genoprime.com> Authored: Tue Jan 10 11:06:48 2017 -0500 Committer: Stephen Mallette <sp...@genoprime.com> Committed: Tue Jan 10 11:06:48 2017 -0500 ---------------------------------------------------------------------- docs/src/recipes/appendix.asciidoc | 12 ++++++++++++ 1 file changed, 12 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/6971e644/docs/src/recipes/appendix.asciidoc ---------------------------------------------------------------------- diff --git a/docs/src/recipes/appendix.asciidoc b/docs/src/recipes/appendix.asciidoc index 15d7340..369d049 100644 --- a/docs/src/recipes/appendix.asciidoc +++ b/docs/src/recipes/appendix.asciidoc @@ -125,3 +125,15 @@ g.V().not(has("location", without(places))). where(values("location").is(within(places)).count().is(places.size())). valueMap() ---- + +[[appendix-f]] +_Methods for performing some basic mathematical operations in the "modern" graph._ + +[gremlin-groovy,modern] +---- +g.V().values("age").sum() // sum all ages +g.V().values("age").fold(1, mult) // multiply all ages +g.V().values("age").map(union(identity(), constant(-1)).sum()) // subtract 1 +g.V().values("age").map(union(identity(), identity()).sum()) // multiply by 2 (simple) +g.V().values("age").map(union(identity(), constant(2)).fold(1, mult)) // multiply by 2 (generally useful for multiplications by n): +---- \ No newline at end of file
