Either


1   /*
2    * Created on Dec 11, 2004
3    *
4    * Author Ben Yu
5    */
6   package tests.jfun.parsec.rfc822;
7   
8   /**
9    * @author Ben Yu
10   *
11   * Dec 11, 2004
12   */
13  public final class Either {
14    private final Object   obj;
15    private final boolean is_right;
16  
17    /**
18     * @param left
19     * @param right
20     */
21    private Either(final boolean r, final Object   v) {
22      this.is_right = r;
23      this.obj = v;
24    }
25    public static Either left(Object   l){
26      return new Either(false, l);
27    }
28    public static Either right(Object   r){
29      return new Either(true, r);
30    }
31    public boolean isRight(){
32      return is_right;
33    }
34    public Object   get(){
35      return obj;
36    }
37    public String   toString(){
38      return obj.toString();
39    }
40  }
41

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