[fpc-pascal] Array clearing

Ryan Joseph ryan at thealchemistguild.com
Tue Apr 4 16:54:48 CEST 2017

> On Apr 4, 2017, at 9:46 PM, Sven Barth via fpc-pascal <fpc-pascal at lists.freepascal.org> wrote:
> SetLength() allocates a single block of memory, cause array access is
> ordinary pointer arithmetic. However if you have an array of array then
> the first array stores a pointer to each sub array.
> E.g. the following would be valid, too:
> === code begin ===
> var
>  arr: array of array of Integer;
> begin
>  SetLength(arr, 10, 10);

“then the first array stores a pointer to each sub array.”

Could you illustrate this is code? I don’t think I’m understanding this exactly like it’s represented in memory. There’s only one “sub array” in this 2x2 array so how does that look in memory?

	Ryan Joseph

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