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https://issues.apache.org/jira/browse/TINKERPOP-2978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17778851#comment-17778851
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ASF GitHub Bot commented on TINKERPOP-2978:
-------------------------------------------
kenhuuu commented on code in PR #2302:
URL: https://github.com/apache/tinkerpop/pull/2302#discussion_r1369372021
##########
docs/src/reference/the-traversal.asciidoc:
##########
@@ -3759,12 +3885,14 @@
link:++https://tinkerpop.apache.org/javadocs/x.y.z/core/org/apache/tinkerpop/gre
[[reverse-step]]
=== Reverse Step
-The `reverse()`-step (*map*) returns a reversed string of the incoming string
traverser. Null values are not processed and remain
-as null when returned. If the incoming traverser is a non-String value then an
`IllegalArgumentException` will be thrown.
+The `reverse()`-step (*map*) returns a reversed of the incoming list
traverser. Single values (including null) are not
+processed and are added back to the Traversal Stream unchanged. If the
incoming traverser is a String value then the
+reversed String will be returned.
[gremlin-groovy,modern]
----
g.V().values("name").reverse()
+g.V().values("name").fold().reverse()
Review Comment:
Done.
##########
docs/src/upgrade/release-3.7.x.asciidoc:
##########
@@ -225,11 +226,34 @@ gremlin> g.V().values("age").fold().all(P.gt(10))
==>[29,27,32,35]
gremlin> g.V().values("age").fold().any(P.eq(32))
==>[29,27,32,35]
+gremlin>
g.V().values("age").fold().product(__.V().values("age").limit(2).fold())
+==>[[29,29],[29,27],[27,29],[27,27],[32,29],[32,27],[35,29],[35,27]]
+gremlin> g.V().values("age").fold().merge([32,30,50])
+==>[32,50,35,27,29,30]
+gremlin> g.V().values("age").fold().combine([32,30,50])
+==>[29,27,32,35,32,30,50]
+gremlin> g.V().values("age").fold().intersect([32,30,50])
+==>[32]
+gremlin> g.V().values("age").fold().disjunct([32,30,50])
+==>[50,35,27,29,30]
+gremlin> g.V().values("age").fold().difference([32,30,50])
+==>[35,27,29]
+gremlin> g.V().values("age").order().by(desc).fold().reverse()
+==>[27,29,32,35]
+gremlin> g.V().values("age").fold().join("-")
Review Comment:
conjoin. updated.
> Add List Manipulation Steps to Gremlin
> --------------------------------------
>
> Key: TINKERPOP-2978
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2978
> Project: TinkerPop
> Issue Type: Improvement
> Components: language
> Reporter: Cole Greer
> Priority: Major
>
> Today Gremlin requires that users fall back to closures to handle many common
> list manipulation options that users want to do on data in the graph. This
> is a problem for many users as many of the providers prevent the use of
> closures due to the security risks so for these users there is no way to
> manipulate lists directly.
> A full list of proposed functions and semantics is detailed here:
> https://github.com/apache/tinkerpop/blob/3.7.0/docs/src/dev/future/proposal-3-remove-closures.asciidoc
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