Flash Actionscript Programming Basics

Bitwise Operators

Bitwise operators operate on the value to base 2 (binary). Operands must be integers.

Left Shift ("<<") - shifts the bits of the left operand some number of positions to the left.
e.g.

Variables (AS 2.0)

A variable is identified by a user-supplied name. Each variable is of a particular data type. E.g.

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  The use of the ":Datatype" is not strictly enforced in AS2 but I strongly recommend it.
  
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  A variable can be composed of letters, numbers and underscore. Upper and lower case letters are different.
  
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  Variables need to be initialised. I.e. given an initial value.
  
  
  var myNum:Number; //Declaration
  myNum = 0; //Initialisation
  
  
  
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  In AS 1.0, variables are not strictly typed and can change types.