a port of the Processing Visualization Language
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 AND)
|| (logical OR)
if()

This reference is licensed under the CC BY-NC-SA 2.0 license:

Creative Commons License
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