Tarray , uses unit not found :-(

[FranzB 0]

which unit contains the TArray class , I*m  using Delphi 10.4 

 

not  working units : 

 

  
System.Generics.Collections.TArray,
System.TArray,

 

 

[Rollo62 536]

Both:

 

https://docwiki.embarcadero.com/Libraries/Sydney/en/System.TArray

is defined as

type TArray = array of T;

and

https://docwiki.embarcadero.com/Libraries/Sydney/en/System.Generics.Collections.TArray

contains the generic version of the array

var
    LDest : TArray< Integer >;
begin
    SetLength( LDest, 2 );
    LDest[ 0 ] := 111;
    LDest[ 1 ] := 222;
     

 

 

[Stefan Glienke 2002]

If you mean the TArray class with the Sort methods and so on then it's System.Generics.Collections. TArray<T> in System is not a class but a dynamic array declaration.

Edited November 2, 2021 by Stefan Glienke

[FranzB 0]

I want to compile this test code below  for regular expressions, but none uses option works for me ... 

 

error 

 

[dcc32 Fatal Error] ..... .pas(10): F2613 Unit 'System.Generics.Collections.TArray' not found.

 

 

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes,
  System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs, FMX.Memo.Types,
  FMX.StdCtrls, FMX.ScrollBox, FMX.Memo, FMX.Controls.Presentation, FMX.Edit,
 // System.Generics.Collections.TArray,
 // System.TArray,
  System.RegularExpressions;;





.....

procedure TForm2.Button_evalregexpressionsClick(Sender: TObject);
var
  regex: string;
  analysistxt: string;

  list: TArray<string>;
  item: String;

begin
  regex := Edit_regexp.Text;
  analysistxt := Edit_analysisText.Text;

  list := TRegEx.Split(analysistxt, regex);
  for item in list do
  begin
    ShowMessage(item);
  end;

end;

end.

 

[darnocian 84]

I'm not sure if think you might be thinking that 'uses' works similarly to the 'import' statement in Java. In Java, you normally import the type from the fully qualified package as you have attempted.

 

'System.Generics.Collections' is the unit, with many types/functions defined within. if you just needed to use it, you simply do 'uses System.Generics.Collections;'

From the online help, if you see something like 'System.Generic.Collections.TArray' -  it normally means that 'TArray' will be defined in 'System.Generics.Collections', so you 'uses' as illustrated above.

 

[Remy Lebeau 1394]

19 hours ago, FranzB said:

error

[dcc32 Fatal Error] ..... .pas(10): F2613 Unit 'System.Generics.Collections.TArray' not found.

The non-generic TArray is a type in the System unit, and the generic TArray<T> is a type in the System.Generics.Collections unit.  The uses clause is used to specify units only, not types.  TArray is not its own unit, so don't specify TArray in your uses clause, eg you need to change 'System.Generics.Collections.TArray' to just 'System.Generics.Collections' in the uses clause.  But don't change 'System.TArray' to 'System', just drop it entirely, as specify 'System' by itself in a uses clause will cause a compiler error (the System unit is already used implicitly in every unit).

 

Edited November 3, 2021 by Remy Lebeau

[FranzB 0]

thanks, the issue is now solved ...  did too much coding in JAVA as well 🙂  

[Fr0sT.Brutal 900]

On 11/3/2021 at 7:23 PM, Remy Lebeau said:

The non-generic TArray is a type in the System unit, and the generic TArray<T> is a type in the System.Generics.Collections unit. 

TArray<T> = array of T;

XE2's System.pas...