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What is the difference between System.Linq.Enumerable.WhereListIterator & System.Linq.Enumerable.WhereSelectListIterator?

What is the difference between System.Linq.Enumerable.WhereListIterator and System.Linq.Enumerable.WhereSelectListIterator?

One difference I noticed is the WhereListIterator type, which reflects changes in the collection object, but WhereSelectListIterator is not

I will make it more clear, for example.

I have a script in which I retrieve my domain object from a repository

var buckets = testRepository.GetBuckets(testIds);

Then I select specific buckets from the above collection inside the loop

 var bucketsForTest = buckets.Where(bucket => bucket.TestID == test.testId);

Then I change one property of all the Bucket objects inside the LooserTrafficDisributor object method.

ITrafficDistributor distributor = new LooserTrafficDisributor(bucketsForTest);

IEnumerable<Bucket> updatedBuckets = distributor.Distribute(test.AutoDecision);

Constructor LooserTrafficDisributor

  public LooserTrafficDisributor(IEnumerable<Bucket> allBuckets)
    {
        this.allBuckets = allBuckets;
    }

The distributed method inside LooserTrafficDistributor is as follows

 private IEnumerable<Bucket> DistributeTraffic(bool autoDecision)
 {
  // allBuckets is class variable in LooserTrafficDistributor object which is set through constructor shown above .
  // Omitted other details

                allBuckets.Where(bucket=> bucket.IsControl == false).ToList()
                    .ForEach(bucket => bucket.TrafficPercentage += 10 ));
return allBuckets
 }

IEnumerable updatedBuckets.

, , Bucket , , Bucket

 var bucketsForTest = testRows.Where(testrow => testrow.url == url.url).Select(currRow => new Bucket
    {
                TestID = currRow.TestId,
                    BucketID = currRow.BucketId,
                    BucketName = currRow.c_bucket_name,
                    TrafficPercentage = Convert.ToInt32(currRow.i_bucket_percentage),
                    IsControl = currRow.b_is_control,
                    IsEnabled = currRow.b_enabled,
                    UpdatedAdminId = currRow.i_updated_admin_id,
                    LogAsSection = currRow.i_log_as_section
             }) ;

  ITrafficDistributor distributor = new LooserTrafficDisributor(bucketsForTest);

  IEnumerable<Bucket> updatedBuckets = distributor.Distribute(test.AutoDecision, strategy.GetStatisticallySignificantLoosingBucketIds());

, IEnumerable updatedBuckets. Infact DistributeTraffic, .

+5
1

.Where() IEnumerable , , . .Select() , IEnumerable , select-statement. , .

Bucket Bucket, Bucket.

+4

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