Adrian Maier wrote:
On 10/31/07, Matt Emson <[EMAIL PROTECTED]> wrote:
Adrian Maier wrote:
Hello,
I'm seeking for advice about which is the best way to hold an array of
class instances
I need to access the elements using its position (like a regular
array) , and also i'd like
the structure to grow when I add more elements
TObjectList
I am aware that TObjectList is one of the possible ways.
But I was hoping to get a better understanding about the purpose of these
various classes or types of array , and more importantly what are the
drawbacks .
Is there really no wiki page , tutorial, anything that provides an overview of
the collections and types of arrays that FPC has ?
You can use dynamic arrays, they work like an ansi string:
var
VArray: array of TSomeClass;
begin
SetLength(VArray, 10);
// now you have VArray[0] .. VArray[9];
SetLength(VArray, 20);
// now you have [0] .. [19];
// Length(VArray) = 20
// for I := 0 to Pred(Length(VArray)) is a valid statement
They are reference counted, just like ansi strings, ie don't worry about
memory leakages.
--
Joao Morais
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