[jira] Resolved: (SANDBOX-224) [functor] Parent interface for all functors

["Matt Benson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SANDBOX-224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Benson resolved SANDBOX-224.
---------------------------------

    Resolution: Fixed

Sending        src/main/java/org/apache/commons/functor/BinaryFunction.java
Adding         src/main/java/org/apache/commons/functor/BinaryFunctor.java
Sending        src/main/java/org/apache/commons/functor/BinaryPredicate.java
Sending        src/main/java/org/apache/commons/functor/BinaryProcedure.java
Sending        src/main/java/org/apache/commons/functor/Function.java
Adding         src/main/java/org/apache/commons/functor/Functor.java
Adding         src/main/java/org/apache/commons/functor/NullaryFunctor.java
Sending        src/main/java/org/apache/commons/functor/Predicate.java
Sending        src/main/java/org/apache/commons/functor/Procedure.java
Sending        src/main/java/org/apache/commons/functor/UnaryFunction.java
Adding         src/main/java/org/apache/commons/functor/UnaryFunctor.java
Sending        src/main/java/org/apache/commons/functor/UnaryPredicate.java
Sending        src/main/java/org/apache/commons/functor/UnaryProcedure.java
Transmitting file data .............
Committed revision 647290.



> [functor] Parent interface for all functors
> -------------------------------------------
>
>                 Key: SANDBOX-224
>                 URL: https://issues.apache.org/jira/browse/SANDBOX-224
>             Project: Commons Sandbox
>          Issue Type: Improvement
>          Components: Functor
>         Environment: Operating System: All
> Platform: All
>            Reporter: Brian D. Eubanks
>            Priority: Minor
>
> Functor Enhancement: Parent interface for all functors
> I would like to see an empty Functor interface as a marker for all functors.
> This would be useful for storing functors in typed Maps, providing functor
> metadata lookup (e.g. parameters and return types), and passing functors
> generically as method parameters. It's an easy enhancement to make, and
> potentially very powerful.
> public interface Functor {}
> public interface Predicate extends Functor 
> public interface UnaryPredicate extends Functor 
> public interface BinaryPredicate extends Functor 
> public interface Function extends Functor 
> public interface UnaryFunction extends Functor 
> public interface BinaryFunction extends Functor 
> public interface Procedure extends Functor
> public interface UnaryProcedure extends Functor
> public interface BinaryProcedure extends Functor

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