SetLength and Length

[mikiwoz]

Hello
I seem to have a strange problem here:

procedure Something(var FirstArray:array of string);
var SecondArray:array of string;
begin
    SetLength(SecondArray, 1);
    SecondArray[0]:='SomeString';
    FirstArray:=SecondArray; <- ERROR HERE "The operator is not aplicable to operand type"
end;

WTF? Both arrays are of the same type.
I tried SetLength(FirstArray, 1);, but got "Type mismatch" error. Am I missing something?

TIA
Mike

[matthijs]

FirstArray is an array of string. SecondArray however is another array of string. What may help is:

Code: [Select]


type
  TMyArrayOfString = Array of string;

procedure Something(var FirstArray, SecondArray: TMyArrayOfString);
begin
  ....

Now they are both the same.

[Lightning]

Yes when you define complex types you have to use define another type to make them compattible.