[jira] [Updated] (COLLECTIONS-502) Generic parameter inconsistency on various INSTANCE fields

["Thomas Neidhart (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COLLECTIONS-502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Neidhart updated COLLECTIONS-502:
----------------------------------------

    Summary: Generic parameter inconsistency on various INSTANCE fields  (was: Generic parameter inconsistency on the Predicates INSTANCE fields)

> Generic parameter inconsistency on various INSTANCE fields
> ----------------------------------------------------------
>
>                 Key: COLLECTIONS-502
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-502
>             Project: Commons Collections
>          Issue Type: Improvement
>          Components: Functor
>    Affects Versions: 4.0
>            Reporter: Emmanuel Bourg
>            Priority: Trivial
>
> In {{FalsePredicate}} the {{INSTANCE}} singleton is defined as {{Predicate<Object>}}. In other predicates such as {{TruePredicate}} it's
> defined as {{Predicate<?>}}. In both cases this prevents the declaration of:
> {code}
> Predicate<Foo> predicate = FalsePredicate.INSTANCE;
> {code}
> This will fail to compile.
> I suggest declaring the INSTANCE fields as an ungenerified {{Predicate}}, such that the above example compiles with an unchecked warning.



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