okram

gremlin> g.v(1).identity().choose({it.get().out().hasNext() ? 0 : 1}, g.of().out(), g.of().in())
==>v[3]
==>v[2]
==>v[4]
gremlin> g.v(1).jump("x", {it.get().out().hasNext()}).in().jump("y").as("x").out().as("y")
==>v[3]
==>v[2]
==>v[4]
gremlin> g.V.jump("x", {it.get().out().hasNext()}).in().jump("y").as("x").out().as("y")
==>v[3]

okram

~$ gremlin

         \,,,/
         (o o)
-----oOOo-(_)-oOOo-----
gremlin> g = new TinkerGraph()
==>tinkergraph[vertices:0 edges:0]
gremlin> (0..10).each{g.addVertex([name:it])}
==>0
==>1

okram

$ bin/gremlin.sh

         \,,,/
         (o o)
-----oOOo-(3)-oOOo-----
plugin loaded: server
plugin loaded: gephi
plugin loaded: utilities
gremlin> g = TinkerFactory.createClassic()
==>tinkergraph[vertices:6 edges:6]

okram

gremlin> g = TinkerFactory.createClassic()
==>tinkergraph[vertices:6 edges:6]
gremlin> g.V.as('x').match('a', g.of().as('a').out.as('b'), g.of().as('b').out.as('c'))
==>[a:v[1], b:v[4], c:v[5]]
==>[a:v[1], b:v[4], c:v[3]]
gremlin> g.V.as('x').match('a', g.of().as('a').out.as('b'), g.of().as('b').out.as('c')).keep('a')
==>v[1]
==>v[1]
gremlin> g.V.as('x').match('a', g.of().as('a').out.as('b'), g.of().as('b').out.as('c')).keep('a','b')
==>[a:v[1], b:v[4]]

okram

    public default <E2> GraphTraversal<S, E2> keep(final String... asLabels) {
        return asLabels.length == 1 ?
                (GraphTraversal) this.addStep(new KeepOneStep<E2>(this, asLabels[0])) :
                (GraphTraversal) this.addStep(new KeepManyStep<Map<String, E2>>(this, asLabels));
    }

okram

gremlin> g.V.match('a',
gremlin>   g.of().as('a').out('knows').as('b'),
gremlin>   g.of().as('b').out('created').has('name','lop'),
gremlin>   g.of().as('b').match('a1', g.of().as('a1').out('created').as('b1')).select('b1').as('c')).select{it.value('name')}
==>[a:marko, b:josh, c:ripple]


gremlin> g.V.match('a',
gremlin>   g.of().as('a').out('knows').as('b'),
gremlin>   g.of().as('b').out('created').has('name','lop'),

okram

~/software/tinkerpop/tinkerpop3$ bin/gremlin.sh

         \,,,/
         (o o)
-----oOOo-(3)-oOOo-----
plugin loaded: server
plugin loaded: gephi
plugin loaded: utilities
gremlin> g = TinkerFactory.createClassic()
==>tinkergraph[vertices:6 edges:6]

okram

gremlin> g.V.match('a',
gremlin>  g.of().as('a').out('created').fold().map{it.get().size()}.as('b'))
==>[a:v[1], b:1]
==>[a:v[4], b:2]
==>[a:v[6], b:1]
gremlin>
gremlin>
gremlin> g.V.match('a',
gremlin>  g.of().as('a').out('created').fold().map{it.get().size()}.as('b'),
gremlin>  g.of().as('b').map{(it.get() * 13.5) as Integer}.as('c'))

okram

~/software/tinkerpop/tinkerpop3$ mvn clean install -Dmaven.test.skip=true
...
~/software/tinkerpop/tinkerpop3$ cd gremlin-console/target/gremlin-console-3.0.0-SNAPSHOT-standalone/
~/software/tinkerpop/tinkerpop3/gremlin-console/target/gremlin-console-3.0.0-SNAPSHOT-standalone$ bin/gremlin.sh

         \,,,/
         (o o)
-----oOOo-(3)-oOOo-----
plugin loaded: server
plugin loaded: gephi

okram

// BROKEN

gremlin> g = TinkerFactory.createClassic()
==>tinkergraph[vertices:6 edges:6]
gremlin> g.V.store("4")
The memory does not have a value for provided variable: %&%cap
Display stack trace? [yN]

// FIXED