Reference for Processing version 1.2. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.


! (logical NOT)

example pic
boolean a = false;
if (!a) {
  rect(30, 20, 50, 50);
a = true;
if (a) {
  line(20, 10, 90, 80);
  line(20, 80, 90, 10);
Description Inverts the Boolean value of an expression. Returns true if the expression is false and returns false if the expression is true. If the expression (a>b) evaluates to true, then !(a>b) evaluates to false.
expression any valid expression
Usage Web & Application
Related || (logical OR)
&& (logical AND)
Updated on June 14, 2010 12:05:29pm EDT

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