Delphi language features missing from the Free Pascal Compiler

From Lazarus wiki
Revision as of 06:36, 11 September 2011 by Paul Ishenin (talk | contribs)

Note: some of new Delphi features are already implemented in FPC trunk.

New since Delphi 2007

Advanced Records

http://docwiki.embarcadero.com/RADStudio/en/Structured_Types#Records_.28advanced.29

Implemented without record constructors.

New since Delphi 2009

Generics Syntax

A good delphi reference is here: http://docwiki.embarcadero.com/RADStudio/en/Generics_Index

Partially implemented in 2.5.1

Support for ansistrings with a definable codepage

Anonymous Methods

http://docs.embarcadero.com/products/rad_studio/delphiAndcpp2009/HelpUpdate2/EN/html/devcommon/anonymousmethods_xml.html

New since Delphi 2010

Custom Attributes

Enhanced RTTI

Delayed directive

Info is here: http://docwiki.embarcadero.com/RADStudio/en/Libraries_and_Packages#Delayed_Loading Some info about internals:

  1. http://blogs.embarcadero.com/abauer/2009/08/25/38894
  2. http://blogs.embarcadero.com/abauer/2009/08/29/38896
  3. http://blogs.embarcadero.com/chrishesik/2009/11/02/35056

fpc wiki about that topic: http://wiki.freepascal.org/Dynamically_loading_headers

AS and IS extended for interfaces

Info is here:

  1. http://docwiki.embarcadero.com/RADStudio/en/Interface_References#Casting_Interface_References_to_Objects
  2. http://blogs.embarcadero.com/abauer/2009/08/21/38893

Misc

  1. Constructor syntax for Dynamic arrays Mantis 15385
  2. (Library) packages
  3. "automated" keyword, which is like "public", but generates COM specific RTTI. Afaik this kind of COM usage is deprecated though.

Reference

  1. http://edn.embarcadero.com/article/34324
  2. http://edn.embarcadero.com/article/images/39076/New_Delphi_Coding_Styles_and_Architectures.pdf
  3. http://docwiki.embarcadero.com/RADStudio/en/What's_New_in_Delphi_and_C%2B%2BBuilder_2010