code symbols in AS3

[jerdunham]

I am currently reading "Learning Actionscript 3.0 A Beginners Guide". While I understand most of it, the author declines to mention what symbols like +=, !+, and -- mean. Therefore I cannot figure out how = is different from += or ==. As someone who is new to coding this is really frustrating as I cannot completely understand the code in the book. Is there a glossary of these type of symbols somewhere? So far Google hasn't been able to help me out on this. Any help would be appreciated.

Thanks

[senocular]

You can get a summary of each in the ActionScript language reference:
http://livedocs.adobe.com/flex/3/langref/operators.html

If you have any additional, specific questions, just ask them here : )

[jerdunham]

Thanks so much! This explains almost everything. The only thing I can't find on there is !=. Do you know what this means?

Thanks

[senocular]

Thats there:
http://livedocs.adobe.com/flex/3/langref/operators.html#inequality

Basically its the opposite of ==. If == returns true when two values or expressions equal each other, != will return false. == is equality, != is inequality. Often when you see "!" in languages its a 'not'. So in the case of !=, its essentially 'not equal'

[jerdunham]

I see it now. Thanks so much for your help.