Comments on: Mandatory Argument Types

By: felisan

felisan — Tue, 16 Jun 2009 09:38:27 +0000

hi.
great stuff.

so tell me, when doing this:
stage.addEventListener(MouseEvent.CLICK, onClick, false, 0, true);

instead of this:
stage.addEventListener(MouseEvent.CLICK, onClick);

will this be the proper way of removing an eventListener then:
stage.removeEventListener(MouseEvent.CLICK, onClick);

or do I need to add more parameters?

thanks
felisan

By: Rich

Rich — Thu, 12 Feb 2009 06:23:47 +0000

@FD, yes. Just move the null from the function call (cited in the post) to the default value of the parameter:

function display(n:String=null) {
    if (n==null) {
        trace("Welcome, Guest");
    } else {
        trace("Welcome, ", n);
    }
}

display()
//display("Mike");

By: Flash Duniya

Flash Duniya — Thu, 12 Feb 2009 06:15:22 +0000

Is there any code for call this kind of functionality:

function display(n:String) {
	if (n==null) {
		trace("Welcoe Guest");
	} else {
		trace("welcome: " n);
	}
}

display();//It's showing error
//display("Mike"); It's working fine

Thanks,
Flash Duniya

By: Rich

Rich — Fri, 18 Jul 2008 20:56:08 +0000

Arjan, hang in there. It’s an uphill climb, but you’ll soon find that the benefits of AS3 vastly outweigh the extra work required to get going again.

By: Arjan

Arjan — Fri, 18 Jul 2008 20:24:34 +0000

THX for this one… Been banging my head against a wall for the last few days trying to figure out how to get a function within a function without this stupid error.

Coming from ASM and Basic on MSX starting to program again after so many years is more troublesome that I thought.