[jira] Commented: (COLLECTIONS-230) CollectionUtils.size(null) should return 0

["Stephen Colebourne (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COLLECTIONS-230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12520541 ] 

Stephen Colebourne commented on COLLECTIONS-230:
------------------------------------------------

+1

> CollectionUtils.size(null) should return 0
> ------------------------------------------
>
>                 Key: COLLECTIONS-230
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-230
>             Project: Commons Collections
>          Issue Type: Wish
>    Affects Versions: 3.2
>            Reporter: Stepan Koltsov
>             Fix For: 3.3
>
>
> Hello,
> CollectionUtils.size(null) currently throws IllegalArgumentException("Unsupported object type: null"). I think CollectionUtils.size(null) should return 0.
> Why?
> The aim of library is to minimize the amount of code that uses this library. In my experience, in the most cases null collections can be threated as as zero-length. Current behavior causes the need of many trivial null-checks.

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