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From "Gilles (Updated) (JIRA)" <>
Subject [jira] [Updated] (MATH-656) "isSparse()" method vs marker interfaces
Date Tue, 07 Feb 2012 12:20:59 GMT


Gilles updated MATH-656:

    Fix Version/s:     (was: 3.0)

Postponing to next major version, as it is unlikely that a new discussion on these API issues
will occur before the release of 3.0.

> "isSparse()" method vs marker interfaces
> ----------------------------------------
>                 Key: MATH-656
>                 URL:
>             Project: Commons Math
>          Issue Type: Improvement
>            Reporter: Gilles
>            Priority: Trivial
>             Fix For: 4.0
> From discussions on the "dev" ML, it seems that it would be advantageous to introduce
a method "isSparse()" in "RealVector" and in "RealMatrix".
> For "RealVector", it will make sense to use it to select between "iterator()" and "sparseIterator()"
in methods implemented in that class.
> We could then remove the "SparseRealVector" and "SparseRealMatrix" interfaces.

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