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From "Gilles (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MATH-432) Create a "Pair" class
Date Fri, 05 Nov 2010 21:12:43 GMT

    [ https://issues.apache.org/jira/browse/MATH-432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928821#action_12928821
] 

Gilles commented on MATH-432:
-----------------------------

Since we don't make _copies_ of the key and value passed to the constructor, the references
are shared by the arguments and the instances variables of the newly-created {{Pair}}. Assuming
that the object is immutable (and documenting it as such) may thus give a false sense of safety.
Is changing the code still worth it?


> 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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