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https://issues.apache.org/jira/browse/MATH-627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253536#comment-13253536
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Arne Plöse commented on MATH-627:
---------------------------------
Sorry for beeing sloppy...
If you look at ArrayRealVector you will find this construct:
{code}
while (it.hasNext() && (e = it.next()) != null) {...}
{code}
the same can also be found in RealVector
> superfluously null check of SparseIterator.next()
> -------------------------------------------------
>
> Key: MATH-627
> URL: https://issues.apache.org/jira/browse/MATH-627
> Project: Commons Math
> Issue Type: Improvement
> Reporter: Arne Plöse
> Priority: Minor
> Fix For: 3.1
>
>
> Looking at the implementation of SparseIterator in
> OpenMapRealVector.OpenMapSparseIterator there is no chance that the entry
> return by next() is ever null - so there is no need to chek this in nearly
> every loop?
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