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Revision: 17446
at September 4, 2009 18:21 by narkisr
Initial Code 
module InvokableHash
   def as(java_ifc)
     # Each method will create a key in the hash which points to a block
     # which is called 
     java_ifc.impl {|name, *args| self[name].call(*args)}
   end
end

class Hash
   include InvokableHash
end

impl = {
 :i => 10,
 :hasNext => proc { impl[:i] > 0 },
 :next => proc { impl[:i] -= 1 }
}

iter = impl.as java.util.Iterator
while (iter.hasNext)
   puts iter.next
end
Initial URL 
http://blog.headius.com/2007/12/groovy-in-ruby-implement-interface-with.html
Initial Description 
Groovy has the as keyword which enables the implementation of a Java interface by using the as keyword, its quite easy to mimic this in JRuby.
Initial Title 
Groovy Map as Interface method in JRuby
Initial Tags 
ruby, groovy
Initial Language 
Ruby