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Removing an item from an array.

Posted on 1998-09-26
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Last Modified: 2010-04-06
I want to be able to remove a record from a dynamic array. Say I have 10 items in the array and I want to remove item 5... how would I do it?

Thanks.
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Question by:Karma121397
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3 Comments
 
LVL 7

Accepted Solution

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Motaz earned 50 total points
ID: 1340903
What did you mean by dynamic array ?

If you have normal array of bytes you can remove item number 5 by this procedue :

ArraySize:=10;

for i:=5 to ArraySize-1 do
  MyArray[i]:=MyArray[i+1];

Dec(ArraySize);

Motaz.
motaz1@yahoo.com
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Author Comment

by:Karma121397
ID: 1340904
That was simple. =)

I'm using dynamic arrays which were introduced in Delphi 4.0, but that shouldn't matter anyway.

Thanks
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Expert Comment

by:pramirezl
ID: 1340905
If you are using arrays with variant, you can use the following funtion:

VarArrayRedim()

This function allows you to change the size of the array.

Example:

var
 A: Variant;
 I: Integer;
begin
 A := VarArrayCreate([0, 4], varOleStr);
 for I := 0 to 4 do A[I] := 'Initial';
 ...
 VarArrayRedim(A, 9);
 for I := 5 to 9 do A[I] := 'Additional';
 ...
end;

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