[fpc-pascal] Managed record questions

Ryan Joseph ryan at thealchemistguild.com
Thu Mar 8 10:16:47 CET 2018



> On Mar 8, 2018, at 4:00 PM, Maciej Izak <hnb.code at gmail.com> wrote:
> 
> Small ad of mORMot (main author Arnaud Bouchez aka ab) :
> 
> with SynCommons module you have nice utils for such things:
> 
> procedure MyProc;
> var
>   list: TList; 
> begin
>   with TAutoFree.One(list, TList.Create) do
>   begin
>     list.Add(x);
>     { ... some other stuff with list here }
>   end;  // <-- here is called list.Free
> end;
> 
> There is also nice module AutoScope which uses management operators (!) by Dmitriy Pomerantsev aka pda0:
> 
> https://github.com/pda0/AutoScope

This is a welcome improvement to the free'ing (like your example you showed) but ultimately we’re still trying to clean up the mess we made by using dynamic memory allocation in the first place. We’ve imposed a restriction on ourselves to allocate everything on the heap (even when we don’t really need it) and now we’re trying to mitigate that using even more tricks.

I know this is how it is and not likely to change I’m just pointing it out. At least we’re not Java or Swift but it’s too bad C++ beat Pascal pretty good on this front. If Pascal is going to have any standing in the modern landscape it should at least be fast and low-level otherwise it’s hard not justify using Java, C# or any other language that is reckless with memory allocation and inefficient with automatic garbage collection schemes.

Regards,
	Ryan Joseph



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