yeah, sure. Any combination of numbers you want. Just make sure all of your
CONFIG_* variables are ascending 2^n numbers (hence the bitwise, we're dealing
with binary number reps here). So...
1
2
4
8
16
32
...and so on
You'll find that this technique is used frequently in many frameworks and
standard libraries, so it's a good thing to understand if you ever choose to
move away from Flash. The V2 Alert component even uses it to determine what
buttons an Alert should display. And not to mention it's fast as hell. No
lengthy array scans to determine configuration. :)
Scott
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of eric dolecki
Sent: Tue 3/28/2006 2:57 PM
To: Flashcoders mailing list
Cc:
Subject: Re: [Flashcoders] Architecture opinion...
would that work with combinations of 3 or 4?
aAndCAndDAndE = A | C | D | E ?
On 3/28/06, Scott Hyndman <[EMAIL PROTECTED]> wrote:
>
> Bitwise arithmentic would be much more appropriate (if I understand
> correctly)
>
> var CONFIG_A:Number = 1;
> var CONFIG_B:Number = 2;
> var CONFIG_C:Number = 4;
> var CONFIG_D:Number = 8;
>
> So a configuration of A and C would be.
>
> var aAndC:Number = A | C;
>
> To detect config numbers, do the following:
>
> if (configNumber & CONFIG_D) {
> // do something to do with D
> }
> else if (configNumber & CONFIG_B) {
> // do something to do with B
> }
>
> This is way more extensible, as it's easy to add new configs.
>
> -----Original Message-----
> From: [EMAIL PROTECTED] on behalf of eric
> dolecki
> Sent: Tue 3/28/2006 2:44 PM
> To: Flashcoders mailing list
> Cc:
> Subject: [Flashcoders] Architecture opinion...
>
> I'm about to create an uber-class that is basically something that
> controls
> walkthroughs of various situations.
>
> I have configuration states... (sets of three basically)
>
> var CONFIG_1A :Number = 0; // Has item A
> var CONFIG_1B:Number = 1; // Has item A and B
> var CONFIG_1C:Number = 2; // Has item A and B and C
> var CONFIG_2A:Number = 3; // Has item A and D
> var CONFIG_2B:Number = 4; // has item A and D and B
> ... etc. for quite a number of different configuration options. 15 of them
> in total.
>
>
> I am using CONFIG_ for use in if/else statements, etc. but I don't think
> this is a very elegant way of doing things. I'd like the code to be
> readable
> & this isn't much better than using simple numerals to set this up. I am
> looking for opinions on how to best set this up. Something where if I
> wanted
> to later could add CONFIG_1D and wouldn't have to renumber things. An
> array
> of configs?
>
> Each config setting will have different paths throughout a "tutorial".
> What
> might be the best way to avoid having switches or if/else statements
> galore
> at each step of the process?
>
> Thanks - I know this is a strange request :)
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