Differences between += & -=

Where is the difference? Sorry for my question but I learn AS3 .0 only few days. Thanks.

its adding or removing a certain amount from a variable. x += 3 will add 3 to x. x -= 2 will subtract 2 from x. Same as x = x – 2

Thanks guys.

You might want to keep this cheat sheet handy http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/operators.html

You might want to keep this cheat sheet handy http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/operators.html

nice one! bookmarked!

also…

i++

is the same as

i = i + 1

is the same as

i += 1

Strictly speaking that is not quite true. It is true in terms of the resulting value of the variable i but all of these statements return a result which can be used in other expressions and the returned results are not the same; ( i += 1 ) and ( i = i + 1 ) return the value of i after incrementing but the post-increment operator ( i++ ) returns the value of i before incrementing.

However, if you do ever have cause to use the value returned by the statement, and need the value after incrementing, and want to keep the code as concise as possible, then the pre-increment operator ( ++i ) can be used to get the desired result.

The words of a true flash guru, tinman you rock!!!

Lol … actually that knowledge comes from my status as a c++ guru, and it just happens to apply in AS3 … but I’ll accept a “Flash Guru” badge if anyone is handing them out