Dynamic Array Creation? 1

[SpeedDemon]

Hi all, is it possible at all to create a new array mid execution in runtime?

eg..

test : array[1..X] of integer; or something similar?

Cheers all.

 

[mikeEd]

You can set the length of an array dynamically if you don't initially specify the size.

var
   test: array of Integer;
...
SetLength(test, X);

This array will be indexed from 0.

 

[SpeedDemon]

Nice one!!!

cheers bud, excellent!

Taz

 

[SpeedDemon]

Hi, me again, is there any way todo this with a multi-dimentional array?

Cheers

 

[mikeEd]

test: array of array of Integer;
...
SetLength(test, X);
SetLength(test[0], Y);

etc.

 

[SpeedDemon]

Nice one!

Thanks again

 

[SpeedDemon]

Hi, im trying the SetLength(test[0], Y); method in a simply loop...

for i:=0 to 100 do
begin
SetLength(test, 2);
end;

however when compiling i get:
[Error] fr_reportfin.pas(202): Missing operator or semicolon

 

[SpeedDemon]

its ok, problem sorted.

 

[SpeedDemon]

Hi again, once I;ve done with the array, because it was genereated dynamically, do I need to close it down to free up memory?

Cheers

 

[mikeEd]

No.

 

[SpeedDemon]

Cheers mike, all working perfectly...

tek-tips need to start giving out prozes to great geezers like yourself

Cheers again

 

[Guest_imported]

if I Declared variable on Delphi 3 as follow :

Var
a : array of integer;

Why I get error :

Error: C:\Program Files\Borland\Delphi 3\Unit1.pas(24): '[' expected but 'OF' found.
Error: C:\Program Files\Borland\Delphi 3\Unit1.pas(25): 'OF' expected but 'IMPLEMENTATION' found.

Does anyone know what my problem ?

 

[svanels]

You didn't declare the size!!!

a: array [1..10] of Steven van Els
SAvanEls@cq-link.sr

 

[mikeEd]

Apparently dynamic arrays aren't supported pre-Delphi 4.