[fpc-pascal] Generic routines for both dynamic array and other collections

[Ryan Joseph]

> On Feb 20, 2021, at 5:19 AM, Виктор Матузенко via fpc-pascal <fpc-pascal at lists.freepascal.org> wrote:
> 
> Hi,
> 
> I am trying to write some generic routines for working with containers. For example, GetLength function:
> 
> 
> 
> unit u;
> 
> {$MODE FPC}
> {$MODESWITCH DEFAULTPARAMETERS}
> {$MODESWITCH OUT}
> {$MODESWITCH RESULT}
> 
> interface
> 
> generic function GetLength<TContainter>(const V: TContainter): SizeUInt;
> 
> implementation
> 
> generic function GetLength<TContainter>(const V: TContainter): SizeUInt;
> begin
>   Exit(V.Count);
> end;
> 
> end.

The helper needs to be in the unit file so that GetLength() knows about Count().

Regards,
	Ryan Joseph