From: Martin Ankerl <martin.ankerl@...>
Date: 2005-09-07T01:36:28+09:00
Subject: ruby style blocks in java

Is there a nice way to implement Ruby-style blocks in Java? I have to 
code in Java and I really miss this feature. This is the best thing I 
came up with, but it is soooo verbose (untested, just from my head):


interface Block {
   public Object yield(Object o);
}

class Array {
   public void do(Block b) {
     // do something here
     while (it.hasNext()) {
       Object o = it.next();
       block.yield(o);
    }
}

class Someth
   public void doSomething() {
     Array a = new Array();
     // do something before
     a.do(new Block() {
       public void yield(Object o) {
         // here is the yield code
       }
     }
     // do something afterwards
   }
}

-- 
martinus