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From "Luc Maisonobe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-793) OrderedTuple#hashCode() uses casting instead of boxing
Date Thu, 31 May 2012 12:49:23 GMT

    [ https://issues.apache.org/jira/browse/MATH-793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13286537#comment-13286537
] 

Luc Maisonobe commented on MATH-793:
------------------------------------

Can we set this to fixed?
                
> OrderedTuple#hashCode() uses casting instead of boxing
> ------------------------------------------------------
>
>                 Key: MATH-793
>                 URL: https://issues.apache.org/jira/browse/MATH-793
>             Project: Commons Math
>          Issue Type: Bug
>         Environment: OrderedTuple#hashCode() is as follows:
> {code}
> public int hashCode() {
>     return Arrays.hashCode(components)   ^
>            ((Integer) offset).hashCode() ^
>            ((Integer) lsb).hashCode()    ^
>            ((Boolean) posInf).hashCode() ^
>            ((Boolean) negInf).hashCode() ^
>            ((Boolean) nan).hashCode();
> }
> {code}
> This is not the correct way to convert primitives to their object equivalents.
> {code}
> ((Integer) x).hashCode() == x
> Boolean#hashCode() is defined as
> value ? 1231 : 1237
> {code}
> Note that this error won't be found unless the compiler emits warnings for boxing.
>            Reporter: Sebb
>             Fix For: 3.1
>
>


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