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Posted to issues@commons.apache.org by "Sebb (JIRA)" <ji...@apache.org> on 2010/11/05 17:22:41 UTC

[jira] Reopened: (MATH-432) Create a "Pair" class

     [ https://issues.apache.org/jira/browse/MATH-432?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebb reopened MATH-432:
-----------------------


I'm not sure why one needs to implement Map.Entry for this purpose, rather than just implementing a plain Pair.

AFAICT, the code does not need the mutability of Map.Entry, so why not use an immutable Pair class?

> Create a "Pair" class
> ---------------------
>
>                 Key: MATH-432
>                 URL: https://issues.apache.org/jira/browse/MATH-432
>             Project: Commons Math
>          Issue Type: New Feature
>            Reporter: Gilles
>            Assignee: Gilles
>             Fix For: 3.0
>
>
> The {{AbstractMap.SimpleEntry}} implementation of {{Map.Entry<K,V>}} is only available in Java 1.6+.
> I propose to create a class Pair<K,V> to be used as a replacement.

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