[fpc-devel] Delphi anonymous methods

[Boian Mitov]

What people don't usually realize is that an anonymous method indeed is 
internally expanded to a full blown object of unique class, with member 
variables and all. Indeed I use the anonymous methods to effectively declare 
a new class and make instance of it right in place with only couple of lines 
of code. In most cases anonymous methods effectively eliminate the need to 
declare new class for certain purpose.

With best regards,
Boian Mitov

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-----Original Message----- 
From: Boian Mitov
Sent: Sunday, March 03, 2013 9:06 PM
To: FPC developers' list
Subject: Re: [fpc-devel] Delphi anonymous methods

Here is another even simpler example:

AItem := GComponentEditorList.Find(
                function( AItem : IComponentEditorItem ) : Boolean
                begin
                  Result := ( AComponent is
AItem.GetInstance().ComponentClass );
                end
             );


In this case you will either need additional member class variable (It will
increase the memory usage), or you will need to declare a whole class just
to achieve what I do with one line of code :-) . Sweet! :-)