[fpc-pascal] Effective memory allocation

Nikolay Nikolov nickysn at gmail.com
Sun Nov 2 19:26:57 CET 2014

On 11/02/2014 03:54 PM, Xiangrong Fang wrote:
> Hi All,
> ...
> Also, I usually use pointer to pass block of memory to functions.  How 
> do I implement a function with the following signature:
> procedure MyProc(var Buf; Len: Integer):
> I mean, how to handle "var Buf" inside the procedure body?
You can take the address of the Buf variable by using @Buf. For example:

procedure MyProc(var Buf; Len: Integer);
   I: Integer;
   P: PByte;
   P := @Buf;
   for I := 0 to Len - 1 do
     (P+I)^ := 0;

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