Perl Data

• Two data types: numbers and strings.
• Both saved in the same type of variable, but surround strings with single or double quotes.
• Single quotes have a different meaning than double quotes.  We'll get to that later.
• Similar to JavaScript
• Constants and Variables
• Constants do not change.  Also called literals.
• Variables do change.
• Variable names are similar to JavaScript: use alphanumeric characters and the underscore only.
• A difference from JavaScript: Perl variable names always begin with $, @, or %, depending on type!
• More to come on this.