& (bitwise AND) \ Language (API) \ Processing 1.0
Author: Casey Reas & Ben Fry
Description: Processing is an electronic sketchbook for developing ideas. It is a context for learning fundamentals of computer programming within the context of the electronic arts.
Keywords: Processing, Processing, Interactive Media, Electronic Arts, Programming, Java, Ben Fry, Casey Reas

Reference for Processing version 1.5. 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.

Name | ### & (bitwise AND)
Examples |
    int a = 207;    // In binary: 11001111
    int b = 61;     // In binary: 00111101
    int c = a & b; // In binary: 00001101
    println(c);     // Prints "13", the decimal equivalent to 00001101
    color argb = color(204, 204, 51, 255);
    // The sytax "& 0xFF" compares the binary
    // representation of the two values and
    // makes all but the last 8 bits into a 0.
    // "0xFF" is 00000000000000000000000011111111
    int a = argb >> 24 & 0xFF;
    int r = argb >> 16 & 0xFF;
    int g = argb >> 8 & 0xFF;
    int b = argb & 0xFF;
    fill(r, g, b, a);
    rect(30, 20, 55, 55);
Description | Compares each corresponding bit in the binary representation of the values. For each comparison two 1's yeild 1, 1 and 0 yeild 0, and two 0's yeild 0. This is easy to see when we look at the binary representation of numbers
      11010110  // 214
    & 01011100  // 92
      --------
      01010100  // 84
To see the binary representation of a number, use the binary() function with println().
Syntax |
    value & value2
Parameters |
value1 | int, char, byte
value2 | int, char, byte
Usage | Web & Application
Related | | (bitwise OR) binary()

Updated on August 30, 2010 04:29:39pm EDT