GIGO: words unreadable aloud

Chapter 6, Exercise 3

3. Create a simple class. Inside a second class, define a reference to an object of the first class. Use lazy initialization to instantiate this object.

Well, Scala doesn't really quite permit lazy initialization (see the "= _;" phrase in sc's declaration), but it's substantially the same. Here are the Java and Lisp versions that Larry wrote.

package x;
class SimpleClass {} 
class SecondClass {
    private var sc : SimpleClass = _;
    def getSC : SimpleClass = {
        if (sc == null) sc = new SimpleClass();
        sc;
    }
}
object c6x3 {
    def main ( args : Array[String] ) = {
        val c2 = new SecondClass;
        W.rn( "sc is " + c2.getSC );
    }
}

12:50:50 AM comment/