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Date: Mon, 8 Oct 2012 05:58:03 +0000 (UTC)
From: =?utf-8?Q?S=C3=A9bastien_Brisard_=28JIRA=29?= <jira@apache.org>
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Subject: [jira] [Commented] (MATH-875) Deprecate RealVector.sparseIterator()
 and FieldVector.sparseIterator()
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    [ https://issues.apache.org/jira/browse/MATH-875?page=3Dcom.atlassian.j=
ira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D134714=
13#comment-13471413 ]=20

S=C3=A9bastien Brisard commented on MATH-875:
----------------------------------------

In {{r1395455}}, deprecated {{sparseIterator()}} in the {{RealVector}} hier=
archy, and replaced its use with {{iterator()}}.
               =20
> Deprecate RealVector.sparseIterator() and FieldVector.sparseIterator()
> ----------------------------------------------------------------------
>
>                 Key: MATH-875
>                 URL: https://issues.apache.org/jira/browse/MATH-875
>             Project: Commons Math
>          Issue Type: Improvement
>    Affects Versions: 3.1, 4.0
>            Reporter: S=C3=A9bastien Brisard
>            Priority: Minor
>              Labels: linear, sparse
>
> Following MATH-870, {{RealVector.sparseIterator()}} and {{FieldVector.spa=
rseIterator()}} have become useless. Their interface was confusing. Indeed,=
 the Javadoc states
> {quote}
> Specialized implementations may choose to not iterate over all dimensions=
, either because those values are unset, or are equal to defaultValue(), or=
 are small enough to be ignored for the purposes of iteration.
> {quote}
> The reference to {{defaultValue()}} (which does *not* exist) suggests tha=
t the interface offers the flexibility to chose the value which is not stor=
ed in the sparse implementation. On the other hand, "small enough to be ign=
ored" suggests that this default value is zero.
> In version 3.1, this method will be deprecated, to be removed in 4.0.

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