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Hello,
Such information is not relevant to system/indicator coding.
It does not matter from end-user point of view - it does not affect the result of calculation.
In AmiBroker number of bars processed is dynamic. You should not make any assumptions on number of executions
or number of bars processed. It depends on tens of factors too long to be listed here.
You can control/turn off the QuickAFL using SetBarsRequired http://www.amibroker.com/f?setbarsrequired
As to variable handling - AmiBroker uses minimum representation required. If it is enough to
store a number - it uses only 4 bytes (IEEE floating) pint.
Whenever needed the number can be and is automatically upsized to array without need to worry.
It simply works and does all necessary conversion on-the-fly. That's all you need to know.
Everything what is important to you as an end user is explained in the User's Guide.
http://www.amibroker.com/guide/h_understandafl.html
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "progster01" <progster@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, November 21, 2007 3:08 PM
Subject: [amibroker] Re: Struggling to Learn
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>
>> Actually it is covered fully in the User's Guide:
>> http://www.amibroker.com/guide/h_understandafl.html
>
> Yes, I've read that section of the User's Guide. It is very helpful,
> but it does not cover what I have termed "the execution model".
>
> By that I mean exactly when, and exactly how many times, is AFL code
> executed with respect to:
>
> a) existing historical bars
>
> b) streaming realtime bars
>
> c) any special cases that result in re-execution of the AFL
>
> d) any other sort of trigger than might be involved
>
> I would add to that the questions of how/when variables/arrays are
> instantiated, how their types are determined at creation, and what
> explicit and implicit conversions are part of AFL execution.
>
> Thus the word "fully" takes on a broader meaning ... ;^)
>
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> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
>
Please note that this group is for discussion between users only.
To get support from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
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