Using Angle Brackets (I have seen people using TList<PSomething>)

Question

I see people declaring their TLists like

MyList : TList<PSomeType>;

Whereafter when they create it, they do

MyList := TList<PSomeType>.Create;

So I asume that by doing that, they won't have to typecast the MyList.Items[I] whenever they are using it, like:

ShowMessage( PSomeType(MyList.Items[I]).SomeTextProperty );

So instead they would just do

ShowMessage( MyList.Items[I].SomeTextProperty );

Is that correct?

If so, then why can't I get it to work in Delphi 2010? I am trying exactly that - Declaring my list as

MyList : TList<PSomeType>;

But the compiler says:

Undeclared Identifier: TList<>

What am I doing wrong there?

Goodnight

Answer 1

These people are using a generic list. TList<T> is a generic version of TList, and it's declared in the unit Generics.Collections, not in Classes, where TList is. Add Generics.Collections to your uses list and you should be fine.

Calumniate

20 seconds faster. :) +1, and deleting my answer. – Lavonda

+1 - will mark as Answer once S.O allows me. Thank you! :) Also, seen your RPG Maker, very nice man! – Goodnight

@Jeff: Thanks. It's been a really rewarding project to work on. – Calumniate