[jira] [Commented] (GROOVY-4189) Removing a metaClass method

["will mason (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-4189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15713193#comment-15713193 ] 

will mason commented on GROOVY-4189:
------------------------------------

G'day, It looks as if this request is still open, which is good.  

I have two use-cases.  
# Firstly you want to remove a method
# Second you may need to replace / update a certain method 
#*  Not an override

The second case may not be at issue, however if you can't set the method dispatch to null, then I suspect that is the same problem.

Something like the following....

{code:groovy:title=Bar.java|borderStyle=solid}
      candidates = Test.metaClass.getSignatures( "foo" ) ==> collection of signatures for matches
      candidates.each { 
          if (....) {
             killList.add( it )
          }
      }
      Test.metaClass.remove( killList )
{code}

I have one suggestion.  If there is a means provided to '_identify_' the method, get the signature, then one might have a possible mechanism to only remove specific method(s) (and/or propert(ies)) .



> Removing a metaClass method
> ---------------------------
>
>                 Key: GROOVY-4189
>                 URL: https://issues.apache.org/jira/browse/GROOVY-4189
>             Project: Groovy
>          Issue Type: Improvement
>          Components: groovy-jdk
>    Affects Versions: 1.7.2
>            Reporter: Tim Yates
>            Priority: Minor
>             Fix For: 3.0
>
>
> Spotted a question on stackoverflow about removing a metaclass method
> The page here
> http://groovy.codehaus.org/JN3525-MetaClasses
> Says you should be able to do it by setting it to null, but we get this:
> {code}
> String.metaClass.foo = { "${delegate}foo" }
> assert 'kung'.foo() == 'kungfoo'
> String.metaClass.foo = null
> assert 'woo'.foo() == 'woofoo'
> {code}
> That last assert should fail (according to the docs), but it passes
> Is this a documentation issue?



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