[jira] [Created] (TINKERPOP-3129) butLast step for collections

["Stephen Mallette (Jira)" <ji...@apache.org>]

Stephen Mallette created TINKERPOP-3129:
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             Summary: butLast step for collections
                 Key: TINKERPOP-3129
                 URL: https://issues.apache.org/jira/browse/TINKERPOP-3129
             Project: TinkerPop
          Issue Type: Improvement
          Components: language, process
    Affects Versions: 3.7.3
            Reporter: Stephen Mallette


Gremlin has several pattern for getting all elements in the stream except for the last one. Here's one way to do it:

{{code}}
fold().sideEffect(tail(local).store('t')).
unfold().where(neq('t')).by().by(unfold())
{{code}}

The set of collection manipulation steps would benefit from an easier way to do this.



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