teaching machines

CS 145 Lecture 16 – Shortcircuiting and Truthtables

October 8, 2014 by Chris Johnson. Filed under cs145, fall 2014, lectures.

Agenda

• what ?s
• short circuiting
• truthtables

TODO

• Read section 4.1. On a 1/4 sheet, share four thoughts: questions, observations, or sightings of conditional logic in your life.

Code

Trick.java

package lecture1008;

public class Trick {
  public static boolean getTrue() {
    System.out.print("t");
    return true;
  }
  
  public static boolean getFalse() {
    System.out.print("f");
    return false;
  }
  
  public static void main(String[] args) {
    boolean trash = getFalse() || getFalse();
  }
}

CheckT.java

package lecture1008;

public class CheckT {
  public static void main(String[] args) {
    String s = "letter";
    
    System.out.println(s.length() > 3 && s.charAt(2) == 't');
  }
}

Haiku