CODEWITHSUNDEEP
delphidelphi-xe7generic-collections
Fabrizio
Fabrizio

Reputation: 8043

Using TArray class functions

I need to sort a TArray<integer>, I've added System.Generics.Collections to the uses clause and then I've tried the following code:

var
  Arr : TArray<integer>;
begin
  SetLength(Arr, 2);
  Arr[0] := 5;
  Arr[1] := 3;

  TArray.Sort(Arr);

  ShowMessage(IntToStr(Arr[0]));
end;

On compiling it produces an E2250 error saying:

[dcc32 Error] Unit1.pas(39): E2250 There is no overloaded version of 'Sort' that can be called with these arguments

Upvotes: 1

Views: 1120

Answers (1)

Fabrizio
Fabrizio

Reputation: 8043

While writing the question I've found the answer... (It was a trivial syntax problem)

In TArray class, the Sort function is defined as follows:

class procedure Sort<T>(var Values: array of T); overload; static;

So TArray class functions must be called by specifying the type after the function name:

var
  Arr : TArray<integer>;
begin
  SetLength(Arr, 2);
  Arr[0] := 5;
  Arr[1] := 3;

  TArray.Sort<integer>(Arr);

  ShowMessage(IntToStr(Arr[0]));
end;

Upvotes: 3

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