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I don't think so. For me the practical difference is that you can handle arrays with the IIF and you cannot handle them with a standard IF. But since the IIF in fact is a packed FOR-IF function and as I don't know exactly how TJ designed this function, I hoped that there would be a possibility to put more than one True-False action in the IIF. And that seems to be impossible. So for me Graham code is the correct way to do the job ...
Ton.
----- Original Message -----
From: wavemechanic
To: amibroker@xxxxxxxxxxxxxxx
Sent: Thursday, February 15, 2007 2:26 PM
Subject: Re: [amibroker] AFL syntax for nested IIF ?
Yes, you can use OR. However, I did not correctly understand what you were after and wrote the IIF too quickly and incorrectly, as Graham noted. I think your basic problem is confusion about if(...) and IIF(...) which is explained in the Users Guide.
Bill
----- Original Message -----
From: Ton Sieverding
To: amibroker@xxxxxxxxxxxxxxx
Sent: Thursday, February 15, 2007 3:53 AM
Subject: Re: [amibroker] AFL syntax for nested IIF ?
Thanks Bill. Yes my IIF() is wrong. I know that. That's what I told you in my email. And yes in the AFL User Guide there is a short part called 'Common Coding Mistakes' but this only gives a very simple use of the double IIF. Not what I am asking for. That's the reason why I told you in my email that it's rather frustrating that I cannot find the syntax ...
Although your code does not give me anymore syntax errors, I have a very strange feeling when looking to those 'AND's. Any idea what would happen when I replaced the AND's by OR's ? And why do we need those AND's where in a normal IF we are using brackets ?
Anyway as far as I can see it works from a syntax point of view. Thanks again ...
Ton.
----- Original Message -----
From: wavemechanic
To: amibroker@xxxxxxxxxxxxxxx
Sent: Thursday, February 15, 2007 1:48 AM
Subject: Re: [amibroker] AFL syntax for nested IIF ?
Your use of IIF() is wrong - Users Guide "Common Coding Mistakes." If I correctly understand what you are after then this should work:
x = iif(barnum < 21, highbar = c and lowbar = c and range = c, null);
Bill
----- Original Message -----
From: "amsiev" <ton.sieverding@xxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, February 14, 2007 12:39 PM
Subject: [amibroker] AFL syntax for nested IIF ?
> What's the syntax in AFL for a double IF with following structure ?
>
> IF True
> Do This ;
> Do That ;
> Do anything;
> Endif
>
> I'm working with arrays so I must use the double IF but my problem is
> that I just cannot get the correct syntax. There are in fact two
> problemens. First I only want the IIF to do something when the
> condition is true. Therefore I don't want the third part in case the
> IIF is false or the 'Do if false'. Second I want the IIF to do
> several things. Not just one. Following syntax is wrong. So what's
> the correct one ?
>
> IIf(BarNumAct<=21,
> {
> Highs[BarNumAct] = Close;
> Lows[BarNumAct] = Close;
> Range[BarNumAct] = (High - Low)/2;
> }
> ,"");
>
>
>
> Please note that this group is for discussion between users only.
>
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