Re: [amibroker] Does the variable exist ?

["Tomasz Janeczko" <groups@xxxxxxxxxxxxx>]

You can use VarGet.

http://www.amibroker.com/f?varget

 

if( IsNull( VarGet("something" ) ) )

{

  // does NOT exist

}

 

or you can use typeof

 

if( typeof( Variable ) == "undefined" )
{
  printf( "Variable does NOT exist");
}

 

Best regards,
Tomasz Janeczko
amibroker.com

----- Original Message -----

From: Ton Sieverding

To: amibroker@xxxxxxxxxxxxxxx

Sent: Wednesday, October 21, 2009 9:03 PM

Subject: Re: [amibroker] Does the variable exist ?

Thanks but that's not what I mean Aron. I want to check in AFL if a variable exitsts or not. So a variable being defined in the program. Let's say you have a loop that creates variables with VarSet going from AmiP0 thru AmiP9. You don't know where the loop ends and therefore do not know which variables you are getting. For that reason you must have a possibility tot check if a variable exists or else you are getting a syntax error. So there must be an instruction in AFL that provides this check. Something like IF ( VarExist(AmiP5)) etc. I just don't get the right instruction ...

 

Regards, Ton.

 

 

----- Original Message -----

From: Aron

To: amibroker@xxxxxxxxxxxxxxx

Sent: Wednesday, October 21, 2009 7:22 PM

Subject: Re: [amibroker] Does the variable exist ?

 

Formula Editor > Edit> Find

On 10/21/2009 6:57 PM, amsiev wrote:
> How do I check in AFL if a variable exists ? Say I have a variable AmiP8 and want to know in the program if this variable exists. What's the AFL instruction for that ? Should be something like :
> If (VarExist(AmiP8)) etc. But I cannot find it ...
>
> Regards, Ton.
>
>
>
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