Leaderboard

Alek, I really don’t understand your intentions. You obviously have your opinion and that’s okay - but you are not allowing other points of view without insulting other members of this community. Stop this now. As long as you act this way, we cannot discuss with each other (read: with you). Rudy - sometimes a discussion must stop when we realize that it will lead to nowhere. Especially in a web-forum with a linear discussion-thread. The tree-based layout of a usenet-group allowed yo to discuss side-aspects for ever. But here this style just captures a whole thread.

🧑🌴 ... ? 😂

We already have mixed memory management model where ARC based classes coexist with non ARC based classes. Now different people have different views how well that model works, but generally it doesn't. It is complex model that requires plenty of knowledge to use it safely, and even if you know how to use it, you constantly have to jump through the hoops because quite commonly you don't have what you really need in particular code. You will either have reference counted class when you don't need one, or you will have non reference counted when you could really use it. On top of that you have TComponent based ownership model that will get in your way when you least need it. OK, it is not all that bad... but situation is far from ideal. Then we got ARC compiler, that solves all that duality problems perfectly. To be clear, no memory management model is perfect for all use cases, but in case of Delphi full ARC was the best fit in terms of existing code bases and integration with existing ARC based model for interfaces. But, it turned out that even though it was the best fit for majority use cases, changes required in existing code bases were too huge, also it required learning and adopting to new ways of writing code. Guess what? ARC was not welcomed by majority of Delphi developers that lead to decisions Macro explained in his blog post and decision that ARC compiler is deprecated. So, after this ARC compiler failure. You want to implement your completely different mixed model that would still suffer from various problems - because no matter how far you go (and even if you can make your model work slightly better that the current one) you still cannot successfully mix ARC and non-ARC objects. Not only you didn't solved original problem, you also introduced another one - your model is completely incompatible with existing code and would require even greater changes to existing code bases. For me that is end of story. This is not viable option, no matter how you turn it.

We can only dream.......

While writing Design Patterns with Delphi, I spent quite some time researching existing literature on design patterns implementation in Delphi, design patterns in other languages, other types of patterns, design principles and so on … In case you would like to dig deeper than the book takes you, here is my reading list. Design Patterns Essentials Software design pattern Computer Science Design Patterns The 23 patterns from the GoF Design Patterns with examples in different languages (including Delphi) Gang of Four Design Patterns Reference Sheet Programming principles Design principles and design patterns SOLID Don't Repeat Yourself (DRY) KISS YAGNI (You Ain't Gonna Need It) Software Design Patterns Are Not Goals, They Are Tools I'm Sick Of GoF Design Patterns Software Development AntiPatterns Big Ball of Mud Design Patterns for Humans Spring4D MMX Code Explorer Singleton https://en.wikipedia.org/wiki/Singleton_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Singleton http://www.yanniel.info/2010/10/singleton-pattern-delphi.html https://ibeblog.com/2010/08/18/delphi-singleton-patterns/ https://stackoverflow.com/a/1409672/4997 https://github.com/jimmckeeth/DelphiPatterns/tree/master/Creational.Singleton https://stackoverflow.com/questions/1409593/creating-a-singleton-in-delphi-using-the-new-features-of-d2009-and-d2010 https://sourcemaking.com/design_patterns/singleton https://schellingerhout.github.io/design%20patterns/design-patterns-creational-delphi/ https://github.com/kamranahmedse/design-patterns-for-humans#-singleton Dependency injection https://en.wikipedia.org/wiki/Dependency_injection http://www.nickhodges.com/post/Service-Locator-is-Indeed-an-Anti-pattern.aspx https://softwareengineering.stackexchange.com/questions/135914/why-was-dependency-injection-pattern-not-included-in-the-gang-of-four/135982 https://stackoverflow.com/questions/4176520/what-is-the-difference-between-strategy-pattern-and-dependency-injection Lazy Initialization https://en.wikipedia.org/wiki/Lazy_initialization Object pool https://en.wikipedia.org/wiki/Object_pool_pattern https://sourcemaking.com/design_patterns/object_pool Factory method https://en.wikipedia.org/wiki/Factory_method_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Factory_method https://github.com/jimmckeeth/DelphiPatterns/tree/master/Creational.FactoryMethod https://sourcemaking.com/design_patterns/factory_method https://schellingerhout.github.io/design%20patterns/design-patterns-creational-delphi/ https://github.com/kamranahmedse/design-patterns-for-humans#-factory-method Abstract factory https://en.wikipedia.org/wiki/Abstract_factory_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Abstract_Factory http://www.felix-colibri.com/papers/design_patterns/factory_and_bridge_patterns/factory_and_bridge_patterns.html#abstract_factory_pattern https://github.com/jimmckeeth/DelphiPatterns/tree/master/Creational.AbstractFactory http://www.nickhodges.com/post/Delphi-and-the-Factory-Pattern-Simple-Factory.aspx https://sourcemaking.com/design_patterns/abstract_factory https://schellingerhout.github.io/design%20patterns/design-patterns-creational-delphi/ https://github.com/kamranahmedse/design-patterns-for-humans#-abstract-factory Prototype https://sourcemaking.com/design_patterns/prototype https://schellingerhout.github.io/design%20patterns/design-patterns-creational-delphi/ https://en.wikipedia.org/wiki/Object_copying#Deep_copy https://github.com/kamranahmedse/design-patterns-for-humans#-prototype Builder https://en.wikipedia.org/wiki/Builder_pattern https://github.com/jimmckeeth/DelphiPatterns/tree/master/Creational.Builder https://sourcemaking.com/design_patterns/builder https://schellingerhout.github.io/design%20patterns/design-patterns-creational-delphi/ https://github.com/kamranahmedse/design-patterns-for-humans#-builder Composite https://en.wikipedia.org/wiki/Composite_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Composite https://github.com/jimmckeeth/DelphiPatterns/tree/master/Structural.Composite https://sourcemaking.com/design_patterns/composite https://github.com/kamranahmedse/design-patterns-for-humans#-composite Flyweight https://en.wikipedia.org/wiki/Flyweight_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Flyweight https://sourcemaking.com/design_patterns/flyweight https://github.com/kamranahmedse/design-patterns-for-humans#-flyweight https://en.wikipedia.org/wiki/String_interning Marker interface https://en.wikipedia.org/wiki/Marker_interface_pattern Bridge https://stackoverflow.com/questions/350404/how-do-the-proxy-decorator-adapter-and-bridge-patterns-differ https://en.wikipedia.org/wiki/Bridge_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Bridge https://github.com/jimmckeeth/DelphiPatterns/tree/master/Structural.Bridge https://sourcemaking.com/design_patterns/bridge http://www.felix-colibri.com/papers/design_patterns/factory_and_bridge_patterns/factory_and_bridge_patterns.html#the_bridge_design_pattern https://simpleprogrammer.com/design-patterns-simplified-the-bridge-pattern/ https://github.com/kamranahmedse/design-patterns-for-humans#-bridge https://stackoverflow.com/q/319728/4997 Adapter https://en.wikipedia.org/wiki/Adapter_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Adapter https://github.com/jimmckeeth/DelphiPatterns/tree/master/Structural.Adapter https://sourcemaking.com/design_patterns/adapter https://github.com/kamranahmedse/design-patterns-for-humans#-adapter Proxy https://en.wikipedia.org/wiki/Proxy_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Proxy https://github.com/jimmckeeth/DelphiPatterns/tree/master/Structural.Proxy https://sourcemaking.com/design_patterns/proxy https://github.com/kamranahmedse/design-patterns-for-humans#-proxy Decorator https://en.wikipedia.org/wiki/Decorator_pattern https://github.com/jimmckeeth/DelphiPatterns/tree/master/Structural.Decorator https://sourcemaking.com/design_patterns/decorator https://github.com/kamranahmedse/design-patterns-for-humans#-decorator Facade https://en.wikipedia.org/wiki/Facade_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Facade https://github.com/jimmckeeth/DelphiPatterns/tree/master/Structural.Facade https://sourcemaking.com/design_patterns/facade https://github.com/kamranahmedse/design-patterns-for-humans#-facade Null object https://en.wikipedia.org/wiki/Null_object_pattern https://sourcemaking.com/design_patterns/null_object Template method https://en.wikipedia.org/wiki/Template_method_pattern https://github.com/jimmckeeth/DelphiPatterns/tree/master/Behavioral.TemplateMethod https://www.codeproject.com/Articles/516094/TemplateplusMethodplusDesignplusPatternplusinplusD https://sourcemaking.com/design_patterns/template_method https://github.com/kamranahmedse/design-patterns-for-humans#-template-method Command https://en.wikipedia.org/wiki/Command_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Command https://github.com/jimmckeeth/DelphiPatterns/tree/master/Behavioral.Command https://sourcemaking.com/design_patterns/command https://github.com/kamranahmedse/design-patterns-for-humans#-command https://stackoverflow.com/q/6064116/4997 State https://en.wikipedia.org/wiki/State_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/State https://github.com/jimmckeeth/DelphiPatterns/tree/master/Behavioral.State https://sourcemaking.com/design_patterns/state https://sourcemaking.com/design_patterns/state/delphi https://github.com/kamranahmedse/design-patterns-for-humans#-state https://en.wikipedia.org/wiki/Finite-state_machine Iterator https://en.wikipedia.org/wiki/Iterator_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Iterator https://github.com/jimmckeeth/DelphiPatterns/tree/master/Behavioral.Iterator https://sourcemaking.com/design_patterns/iterator https://github.com/kamranahmedse/design-patterns-for-humans#-iterator http://docwiki.embarcadero.com/RADStudio/Tokyo/en/Declarations_and_Statements_(Delphi)#For_Statements Visitor https://en.wikipedia.org/wiki/Visitor_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Visitor https://github.com/jimmckeeth/DelphiPatterns/tree/master/Behavioral.Visitor https://sourcemaking.com/design_patterns/visitor https://sourcemaking.com/design_patterns/visitor/delphi https://github.com/kamranahmedse/design-patterns-for-humans#-visitor Observer https://en.wikipedia.org/wiki/Observer_pattern https://en.wikipedia.org/wiki/Publish–subscribe_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Observer https://github.com/jimmckeeth/DelphiPatterns/tree/master/Behavioral.Observer https://github.com/spinettaro/delphi-event-bus https://sourcemaking.com/design_patterns/observer/delphi https://github.com/kamranahmedse/design-patterns-for-humans#-observer http://docwiki.embarcadero.com/Libraries/en/System.Messaging.TMessageManager http://docwiki.embarcadero.com/RADStudio/en/Using_the_RTL_Cross-Platform_Messaging_Solution http://docwiki.embarcadero.com/RADStudio/en/Sending_and_Receiving_Messages_Using_the_RTL http://docwiki.embarcadero.com/Libraries/en/System.Classes.TComponent.Observers Memento https://en.wikipedia.org/wiki/Memento_pattern https://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Memento https://github.com/jimmckeeth/DelphiPatterns/tree/master/Behavioral.Memento https://sourcemaking.com/design_patterns/memento https://github.com/kamranahmedse/design-patterns-for-humans#-memento Lock https://en.wikipedia.org/wiki/Lock_(computer_science) https://en.wikipedia.org/wiki/Spinlock Lock striping https://netjs.blogspot.si/2016/05/lock-striping-in-java-concurrency.html Double-checked locking https://en.wikipedia.org/wiki/Double-checked_locking https://en.wikipedia.org/wiki/Test_and_test-and-set Optimistic locking https://www.javaworld.com/article/2075406/java-web-development/optimistic-locking-pattern-for-ejbs.html https://martinfowler.com/eaaCatalog/optimisticOfflineLock.html https://en.wikipedia.org/wiki/Optimistic_concurrency_control Readers-writer lock https://en.wikipedia.org/wiki/Readers–writer_lock https://docs.microsoft.com/en-us/windows/desktop/sync/slim-reader-writer--srw--locks Thread pool https://en.wikipedia.org/wiki/Thread_pool https://stackoverflow.com/questions/47504201/delphi-ttask-and-tthreadpool Messaging https://en.wikipedia.org/wiki/Message_passing https://en.wikipedia.org/wiki/Message_queue Future https://en.wikipedia.org/wiki/Futures_and_promises Pipeline https://en.wikipedia.org/wiki/Staged_event-driven_architecture Designing Delphi programs https://en.wikipedia.org/wiki/Event-driven_programming http://blong.com/Articles/Actions/Actions.htm https://github.com/andrea-magni/TFrameStand https://martinfowler.com/eaaCatalog/tableModule.html https://stackoverflow.com/questions/433819/table-module-vs-domain-model http://docwiki.embarcadero.com/RADStudio/en/LiveBindings_in_RAD_Studio https://www.embarcadero.com/images/dm/technical-papers/understanding_rad_studio_livebindings.pdf Other kinds of patterns https://en.wikipedia.org/wiki/Exception_handling http://wiki.c2.com/?ExceptionPatterns http://docwiki.embarcadero.com/Libraries/en/System.TObject.Destroy http://www.heaventools.com/eurekalog-exception-logger.htm http://www.madshi.net/madExceptDescription.htm https://github.com/project-jedi/jvcl https://en.wikipedia.org/wiki/Debugging_patterns https://git-scm.com/docs/git-bisect http://www.washi.cs.waseda.ac.jp/wp-content/uploads/2017/03/Woei-Kae-Chen.pdf https://github.com/colinj/Functional https://fsharpforfunandprofit.com/fppatterns/ https://en.wikipedia.org/wiki/Comparison_of_programming_paradigms Books & papers Architectural Patterns, Pethuru Raj, Anupama Raman, Harihara Subramanian Coding in Delphi, Nick Hodges Concurrency with Modern C++, Rainer Grimm Concurrent Patterns and Best Practices, Atul S. Khot Dependency Injection in Delphi, Nick Hodges Design Patterns for Humans, Kamran Ahmed Design Patterns Past and Future, Aleksandar Bulajic Design Patterns - Elements of Reusable Object-Oriented Software, Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides Dive Into Design Patterns, Alexander Shvets Java Design Patterns, Devendra Singh More Coding in Delphi, Nick Hodges The Null Object Pattern, Bobby Woolf

This is why we need a forum that is not StackOverflow: Is there a plugin for delphi IDE for doing the following: Jumping from interface to implementing classes. for example in JIdea Java IDE you can easily point to an interface and see all implementing classes and select to which class you want to jump. It is currently very annoying that Ctrl+Click on a method goes to the interface where the method is declared and there is no easy way to find classes implementing this method. The only option I know is search. Voted down and probably will be closed shortly because: "Recommendation requests are off topic here" https://stackoverflow.com/questions/53116163/is-there-a-way-to-jump-to-implementing-classes-in-delphi-rad-studio Maybe somebody here can help? (Note: It's not my question, I just copied it here.)

🤦🏻‍♀

Recently I'm in desperate need of the facepalm reaction...

Hi there, some of you wanted to ignore specific topics. Well - we are testing this functionality right now. Next to the button "Reply to this topic" you find a new link "Ignore this topic": If you ignore a topic, it will not be listed in any activity-streams. But it will still be included in search-results. An ignored topic is marked with a badge: If you want to "un-ignore" a topic, you will find a link for this: You can manage your ignored topics in your account.settings: For now this should work. Please consider this function more as a "mute topic for _X_ days". Because of the architecture of this plugin, it will not be able to handle hundreds or thousands of ignored topics. So there will be some sort of cleanup - but this part is not active yet. Butf this should be acceptable for us, because older topics will not get that much new content - so they will not disturb you anyway. Let's see how it works. 🙂

Technically we could include any graphic there, but negative reactions will not be implemented here.

That reminds me of googling for PosEx without adding Delphi to put it into context...

It is pretty obvious that you do not care. You should care because this is a public forum, not just yours. Now we have told you several times to move your specific discussions about technical details of the Delphi-language to a separate thread. Most of these posts are offtopic now. You did not care at all. Do I really have to explain to you why it is important for us to stay on a topic? It is not that complicated. If any other person wants find find some information later, they will look for the thread-title to decide for reading a topic or not. This „let us talk about everything“-threads do not help anyone.

I'm just curious. Do either of you have a stopping condition?

New version 13.3.0 released! + TMiTeC_Startup entries extended to full version info + TMiTeC_SMBIOS tables 16,22,39,41,43,204,219,221 detection added + SMBIOS 3.2 compliance added + TProcListMonThread process priority class and affinity added + TProcMonThread process priority class and affinity added + ROM BIOS Explorer enhanced (version 2.0) + Device monitor volume connect/disconnect event now correctly returns multiple drives For more information about the library, download locations and documentation, see the MiTeC System Information Component Suite Home Page

Hi, When you make a code block it defaults to HTML syntax highlighting. For a Delphi forum it would be better if Pascal was selected by default.

Invisible Formatting

Google+ used to be a great place for the international Delphi-community. But it will be shut down next year, so there was a need for a new home. The German speaking community “Delphi-PRAXiS” exists since 2002 and became one of the most important Delphi-communities in Germany, Austria and Switzerland. Now we want to make the next step: We created an English community parallel to our existing German community. We all wish that this community will experience a similar success as our German community. If you already are a German speaking Delphi-PRAXiS user, you can use your existing account, but you have to reset your password. Please visit the following page and follow the instructions: https://www.delphipraxis.net/pages/clone_account.html

MMX Code Explorer shows "Related Classes". When called from inside an interface it shows the implementing classes with navigation on click.