Re: [amibroker] Dynamic Variables

["Tomasz Janeczko" <amibroker@xxxxxx>]

Hello,
 
Dynamic variable is just regular variable with 
dynamic identifier (name).
 
1. The scope is global to the formula that created 
the variable. It means that you can access it from anywhere in the 
formula
that created it. But you can NOT access it from 
other formulas (i.e. dynamic variable is NOT pesistent or 
static)
 
2. No. Dynamic variables support _numeric_ and 
_array_ type as of now. 
 
Dynamic variable DOES NOT DIFFER from regular AFL 
variable, it is the SAME variable but it just has ability to have
dynamic identifier.
 
See this:
 
VarSet( "myvariable", 5 );
 
if( myvariable == 5 )   // this 'dynamic 
variable' works exactly as regular variable and can be accessed regular 
way
{
   printf("myvariable has value of 
5");
}
 
 
Dynamic variables were added just to allow writing 
a loop:
 
for( i = 1; i <= 5; i++ )  VarSet( "Var"+i, 
Ref( C, -i ) );
 
instead of 5 statements:
Var1 = Ref( C, -1 );

Var2 = Ref( C, -2 );

Var3 = Ref( C, -3 );

Var4 = Ref( C, -4 );

Var5 = Ref( C, -5 
);
 
 
but both approaches have the SAME EFFECT -> 
creation of five regular variables called Var1, ...., Var5
 
The only "dynamic" thing about dynamic variables is 
its name (identifier).
 
Best regards,Tomasz Janeczkoamibroker.com
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  Ara Kaloustian 
  
  To: <A title=amibroker@xxxxxxxxxxxxxxx 
  href="">AB-Main 
  Sent: Friday, August 06, 2004 7:48 
  AM
  Subject: [amibroker] Dynamic 
  Variables
  
  The read me files describe Dynamic variables as 
  
   
  * Dynamic variables are variables that are named dynamically, 
  typically by creating a variable name from a static part and a variable part. 
  For example, the following example dynamically constructs the variable name 
  from a variable prefix and a static suffix.<FONT 
  color=#000000>for<FONT 
  color=#000000>( i = 1; i 
  < 10; i++ ) { 
  VarSet( <FONT 
  color=#ff00ff>"C"+i, <FONT 
  color=#0000ff>Ref( <FONT 
  color=#000000>C, -i ) );  } 
  // creates variables C1, C2, C3, C4, ...., 
  C10 equal to Ref( C, -1 ), Ref( C, -2 ),   ..., Ref( C, -10 
  ) // 
  respectively
   
  However 
  there is no mention of its other properties, such 
  as:
   
  1. Scope of variable: I assume it to be 
  same as for Static Variables
  2. Types of values: I assume they are 
  NUMBER and SRTING only, same as for Static variables.
   
  Can anyone confirm 
this?
   
  Thanks
   
  Ara
   Check AmiBroker web page at:<A 
  href="">http://www.amibroker.com/Check 
  group FAQ at: <A 
  href="">http://groups.yahoo.com/group/amibroker/files/groupfaq.html 
  


Check AmiBroker web page at:
http://www.amibroker.com/

Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html








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