Java example source code file (Cons.java)

This example Java source code file (Cons.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

aseq, cons, iseq, object, serializable

The Cons.java Java example source code

/**
 *   Copyright (c) Rich Hickey. All rights reserved.
 *   The use and distribution terms for this software are covered by the
 *   Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
 *   which can be found in the file epl-v10.html at the root of this distribution.
 *   By using this software in any fashion, you are agreeing to be bound by
 * 	 the terms of this license.
 *   You must not remove this notice, or any other, from this software.
 **/

/* rich Mar 25, 2006 11:01:29 AM */

package clojure.lang;

import java.io.Serializable;

final public class Cons extends ASeq implements Serializable {

private final Object _first;
private final ISeq _more;

public Cons(Object first, ISeq _more){
	this._first = first;
	this._more = _more;
}


public Cons(IPersistentMap meta, Object _first, ISeq _more){
	super(meta);
	this._first = _first;
	this._more = _more;
}

public Object first(){
	return _first;
}

public ISeq next(){
	return more().seq();
}

public ISeq more(){
	if(_more == null)
		return PersistentList.EMPTY;
	return _more;
}

public int count(){
	return 1 + RT.count(_more);
}

public Cons withMeta(IPersistentMap meta){
	return new Cons(meta, _first, _more);
}
}