Reference for Processing version 1.0.1+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Name

! (logical NOT)

Examples
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.
Syntax
!expression
Parameters
expression any valid expression
Usage Web & Application
Related || (logical OR)
&& (logical AND)
if()
Updated on November 22, 2008 08:39:26pm PST

Creative Commons License