Array injected in first As block becomes empty in second As block.

Hi, Let say I have Vertex (People) on which I have ZipCode as one property, I have Edge (Know). Now I want to get all the People who I do not know and but comes under array of ZipCode.

  public class People :  IVertex
    {
        public string ZipCode { get; set; }
        public string Id { get; set; }
        public string Label { get; set; }
    }

var nearByZipCodes= new string[] {"10001","10199", "10121"};
var userId="";

 await _g.Inject(nearByZipCodes)
                  .Fold()
                   .As((_, injectedNearByZipCode) => _
                   .V<People>(userId).Both<Know>()
                     .OfType<People>()
                      .Values(c=>c.Id).Fold()
                       .As((__, knownPeople) => __
                         .V<People>().Where(c =>
                          !knownPeople.Value.Contains(c.Id) && injectedNearByZipCode.Value.Contains(c.ZipCode)))
                        );

I tried the above query but injectedNearByZipCode is empty in the second As block. is this expected behavior , if yes what will be proper way to write this query.

Thank you !

Version :

<PackageReference Include="ExRam.Gremlinq.Providers.CosmosDb" Version="8.0.0-preview-0294" />

[danielcweber]

Beware of that caveat! Fold steps will erase your path history, including all the step labels. See here for more details on ReducingBarrierSteps. You have to keep that in mind, there’s no way Gremlinq can detect these (or is there?). A workaround is to wrap the right part of the query in a map operation:

var personWhoMarkDoesNotKnowAndBelongsToNearbyZipCode = await _g
    .Inject(nearByZipCodes)
    .Fold()
    .As((_, injectedNearByZipCode) => _
        .Map(__ => __
            .V<Person>(_marko.Id)
            .Both<Knows>()
            .OfType<Person>()
            .Fold())
        .As((__, knownPeople) => __
            .V<Person>()
            .Where(c => !knownPeople.Value.Contains(c) && injectedNearByZipCode.Value.Contains(c.ZipCode))));

[iAmBipinPaul]

Hi , @danielcweber Thank you, it works. I will go through the link you have provided.