Question

I have a variable, and a function for brevity lets consider it looks like this:

private function applyDiscount (value:Number):Number { return value*_discount; //_discount defined somewhere else } 

OK thats all fine and dandy but say I want to be able to call that function and be able to pass my own discount, but still use the _discount as a default.

I CAN do this:

private function applyDiscount (value:Number, discount:Number = 50):Number     {     return value*discount;     } 

This will make discount default to 50 but I don’t know it at authortime so I need to do this but its not allowed in Flex.

private function applyDiscount (value:Number, discount:Number = _discount):Number     {     return value*discount;     } 

So my question is, what is the best way to achieve the same as the last example in Flex?

Thanks.

Answer 1

 private function applyDiscount(value: Number, discount : Number = Number.POSITIVE_INFINITY){    if(discount == Number.POSITIVE_INFINITY) discount = _discount;     return value*discount; }