Hi,

Can I have or make helper for arrays? like making Count property so I can use it instead of Length ?
For example :

IntegerArray : array of integer; .... for i:= to IntegerArray.Count -1 do ....

Regards,
Ara

I don't know the answer about helper function but I also dislike Length() for arrays.

I solve this dislike by using

  for i := Low(IntegerArray) to High(IntegerArray) do

which covers more possibilities because it handles lower index limit that is non-zero.

Low() and High() also work with static arrays so you can use it almost everywhere.

Doug C.

---- On Sun, 02 Oct 2016 08:39:51 -0400Aradeonas via Lazarus <> wrote ----

Hi,

Can I have or make helper for arrays? like making Count property so I can use it instead of Length ?

For example :

IntegerArray : array of integer;

....

for i:= to IntegerArray.Count -1 do

....

Regards,

Ara

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2016-10-02 14:39 GMT+02:00 Aradeonas via Lazarus <

: Can I have or make helper for arrays? like making Count property so I can use it instead of Length ?

Try to use TDynArray dynamic array wrapper provided by mORMot framework.

http://synopse.info/files/html/Synopse%20mORMot%20Framework%20SAD%201.18.html#TITL_48

mORMot available out of box: http://newpascal.org

Aradeonas wrote

Can I have or make helper for arrays? like making Count property so I can use it instead of Length ?

Yes, you can. FPC 3.0 supports it and Lazarus CodeTools support them as well.

Ondrej

Thanks DougC I used it before but as I said before I want such helpers.

Thanks Maciej as always, I used NewPascal and I liked it but I want to find out FPC is supporting it or not.

Regards,
Ara

Ondrej can you point me to a sample?

I know I can make helper for array of integer but I want some helpers for all type of arrays.

Regards,
Ara

Aradeonas wrote

I know I can make helper for array of integer

This is what I thought you want to.

but I want some helpers for all type of arrays.

Hmmm :( I don't know either.

Maybe you can raise a discussion / feature request in the fpc-devel mailing list to include type helpers for generic arrays? :

program Project1;
{$mode objfpc}{$H+}
{$modeswitch advancedrecords}
{$modeswitch typehelpers}
type
   generic TGenericArray<T> = array of T;
   TIntArray = specialize TGenericArray<Integer>;
   generic TGenericArrayHelper<T> = type helper for TGenericArray<T>
   public
   end;
begin
end.

If not added, you'll need to create a generic record wrapper:

program Project1;
{$mode objfpc}{$H+}
{$modeswitch advancedrecords}
{$modeswitch typehelpers}
type
   generic TGenericArray<T> = record
   private
     FArray: array of T;
   public
     function Count: Integer;
   end;

{ TGenericArray }

function TGenericArray.Count: Integer;
begin
   Result := Length(FArray);
end;
begin
end.

Ondrej

2016-10-02 16:20 GMT+02:00 Ondrej Pokorny via Lazarus <

: Maybe you can raise a discussion / feature request in the fpc-devel mailing list to include type helpers for generic arrays? :

This was discussed in Smart Pointers topic:

http://free-pascal-general.1045716.n5.nabble.com/Smart-Pointers-td5725159.html

Maybe you can raise a discussion / feature request in the fpc-devel mailing list to include type helpers for generic arrays?

So we can have this feature for array it self and should use it for generic arrays?

Regards,
Ara