Flash / Flex / ActionScript/Language/Arithmetic Operators

Arithmetic Operators in Actionscript

   <source lang="java">

Operator Name Example + Plus x + y - Minus/Negation x - y

• Multiply x*y

/ Divide x/y % Modulo x%y package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var nYear:Number = 2004;
       trace(nYear % 4); // Displays: 0
       
   }
 }

}

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Assignment Operators

   <source lang="java">

 

Operator Name Example What It Means = Equals (assignment) x = y x = y += Add by value x += y x = x + y -= Subtract by value x -= y x = x - y

• = Multiply by value x *= y x = x * y

/= Divide by value x /= y x = x / y %= Modulo by value x %= y x = x % y <<= Left shift by value x <<= y x = x << y >>= Right shift by value x >>= y x = x >> y >>>= Right shift zero fill by value x >>>= y x = x >>> y &= Bitwise AND by value x &= y x = x & y |= Bitwise OR by value x |= y x = x | y ^= Bitwise XOR by value x ^= y x = x ^ y

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Compound Assignment Operators (+=, -=, *=, /=, and %=): x += 1; is the same as writing x =

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var x:Number = 0;
       
       x += 5; // x = 5
       trace(x);
       
       x -= 3; // x = 2
       trace(x);
       x *= 3; // x = 6
       trace(x);
       x /= 2; // x = 3
       trace(x);
       x %= 3; // x = 0
       trace(x);
   }
 }

}

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Increment (++) and Decrement ( -- )

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var x:Number = 5;
       x++; // 6
       trace(x);
       
       x--; // 5
       trace(x);
   }
 }

}

       </source>
   
  

Modulo (%)

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var a:int = 9;
       var b:int = 3;
       
       trace(a%b);
   }
 }

}

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myVariable *= 6; is the same as: myVariable = myVariable * 6;

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var myVariable:Number = 6;
       
       myVariable *= 6;
       trace(myVariable);
       
       myVariable = myVariable * 6;
       
       trace(myVariable);
       
   }
 }

}

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myVariable += 6; is the shorthand version of the following: myVariable = myVariable + 6;

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var myVariable:Number = 6;
       
       myVariable = myVariable + 6;
       trace(myVariable); //12
       
       myVariable += 6;
       
       trace(myVariable); //18
   }
 }

}

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Using Mathematical Operators: prefix and postfix

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var quantity:Number = 5;
       trace(quantity++);  // Displays: 5
       trace(quantity);    // Displays: 6
       
       var quantity:Number = 5;
       trace(++quantity);  // Displays: 6
       trace(quantity);    // Displays: 6
   }
 }

}

       </source>