RE: [amibroker] Addition assignment

["Bob Jagow" <bjagow@xxxxxxxxxxxxx>]

A

















A += B should work if neither is an array.
C was designed to generate efficient machine code--the *= operators glibly
assume that the processor can avoid re-fetching A.

Bob

-----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx]On Behalf
Of Martin Cooney
Sent: Wednesday, December 07, 2005 10:53 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: Re: [amibroker] Addition assignment

Thanks Graham,

I got the example from pressing F1 and searching for 'mathematical
operators' - cut of text below.
It's no big deal and maybe I misunderstood the section. Using ExitRate =
ExitRate + Point;  worked for me anyway but I just wondered.


======snip=============================================
Compound statements (Blocks)
A compound statement consists of zero or more statements enclosed in
curly braces ({ }). A compound statement can be used anywhere a
statement is expected. Compound statements are commonly called "blocks."

{
statement1;
....
statementN;
}

(this is 'borrowed' from C language, users of other programming
languages are used to use BEGIN for { and END for } )

if( Amount > 100 )
{
    _TRACE("Amount above 100");
     Balance += Amount;
}
else
     Balance -= Amount;
=======================================================
Cheers
Martin

Graham wrote:
> you are trying to add something to itself ?
> No such thing as addition assignment +=, at least that I am aware of
> If you need to use the previous bar value to calculate the current
> value then you need to use either loop or cum function
>
> Point = WhateverCalculation;
> Exitrate = cum(point);
>
> if more complex then for loop is needed
> assuming point array is already calculated somewhere before this
> Point = WhateverCalculation;
> Exitrate[0] = Point[0];
> for(i=1;i<barcount;i++)
> {
>   ExitRate[i] = ExitRate[i-1] + Point[i];
> }
>
> this allows you to do more complex calcs than just his example
>
> --
> Cheers
> Graham
> AB-Write >< Professional AFL Writing Service
> Yes, I write AFL code to your requirements
> http://e-wire.net.au/~eb_kavan/ab_write.htm
>
>
> On 12/8/05, Martin Cooney <martin@xxxxxxxxxxxxx> wrote:
>  > Hi,
>  >
>  > Newbie at this but I'd been trying to use an addition assignment but
get
>  > a syntax error 30
>  >
>  > e.g.
>  > ExitRate += Point;
>  >
>  > When I replace it with
>  > ExitRate = ExitRate + Point;
>  > I get no error. I've seen an example of it's use in the manua; and
>  > wondered what minor silly thing I'm doing wrong is? Anyone ?
>  >
>  > Cheers
>  > Martin
>
>
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