Story Category: Conference Topics

1

VOTES


VOTE

Want to use SmartPointers in Delphi? Use the Spring4D one: it is unit tested and optimised

jpluimers jpluimers A while ago, there was a nice discussion on smart pointers at [WayBack] Smart Pointers – Generics vrs non-generic implementastion – RTL and Delphi Object Pascal – Delphi-PRAXiS [en]. Conclusion from that: many people think that… … Read more 4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development, Spring4D 0

1

VOTES


VOTE

Delphi processing all Windows messages

jpluimers jpluimers Since I had captures messages inside the main message loop, I forgot it is straightforward: create a [WayBack] TApplicationEvents instance, then use the [WayBack] OnMessage event and hook it to a method like procedure TMainForm.ApplicationEventsMessage(var Msg: TMsg; var… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

1

VOTES


VOTE

How to debug Delphi JSON export stack-overflows: watch the fields and their circular references

jpluimers jpluimers Unlike Delphi RTL XML support which is property based, the JSON support is field based. By default, JSON uses all fields (no matter their protection level, so anything from strict private to published  is taken into… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

1

VOTES


VOTE

In Delphi, avoid having a TComponent descendant implement interfaces, unless you are prepared to handle your refcounting

jpluimers jpluimers Every now and then I see code, where a class descending from TComponent implements some interfaces, only interface references are used to the instances, and the expected behaviour is that the instances will free themselves when… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

1

VOTES


VOTE

A bunch of Spring4D dependency injection container related questions

jpluimers jpluimers Since G+ is down, a lot of interesting questions have vanished. Luckily I saved some by [WayBack] Jacek Laskowski – Google+ related to Spring4D and dependency injection: [WayBack] Spring4D IoC and specific singleton… – Jacek Laskowski –… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

1

VOTES


VOTE

Do not make methods protected unless you want them to be visible as public

jpluimers jpluimers One of the protection levels in Delphi is protected. Originally meant for the class itself, that level is also visible to “friends”: anything in the same unit, for example: unit BusinessLogicUnit; interface type TBusinessLogic =… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

1

VOTES


VOTE

delphi – What are the list of all possible values for DVCLAL? – Stack Overflow

jpluimers jpluimers From a while ago, from notes even longer ago – around 1994 on DVCLAL the Delphi VCL Access License code which is actually a checking logic for determining the SKU (stock keeping unit) or Delphi… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, History, Software Development 0

1

VOTES


VOTE

Tracking down Delphi “abstract error” occassions.

jpluimers jpluimers A few tips. Set breakpoints in these units: System.pas: procedure _AbstractError; begin if Assigned(AbstractErrorProc) then AbstractErrorProc; RunErrorAt(210, ReturnAddress); end; System.SysUtils.pas: procedure AbstractErrorHandler; begin raise EAbstractError.CreateRes(@SAbstractError); end; add a watch for ClassName that has “Allow side… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

2

VOTES


VOTE

Be careful changing the DataContext of a TRemotable

jpluimers jpluimers Still not sure why the RTL code is like this: procedure TRemotable.SetDataContext(Value: TDataContext); begin if (RemotableDataContext <> nil) and (RemotableDataContext = Self.DataContext) then begin TDataContext(RemotableDataContext).RemoveObjectToDestroy(Self); end; FDataContext := Value; end; It means that if you… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

1

VOTES


VOTE

Pointers are dangerous – twm’s blog

jpluimers jpluimers TL;DR Do not keep pointers to objects in memory that can be relocated. SetLength can relocate the memory [WayBack] Pointers are dangerous – twm’s blog Via: [WayBack] Pointers can be really helpful, especially they can improve… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

1

VOTES


VOTE

Learned about the {$EXTENSION zzz} or {$E zzz} Delphi directive: {$EXTENSION yyy.zzz} fails

jpluimers jpluimers I totally missed that this has been added in Delphi a long time ago (at least in Delphi 2007 or maybe even before): the {$EXTENSION zzz} or {$E zzz} Delphi directive that sets the file extension… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

1

VOTES


VOTE

FastMM PushAllocationGroup

jpluimers jpluimers Few people seem to know about the FastMM PushAllocationGroup method. This search returned almost nothing: fastmm PushAllocationGroup -site:github.com -site:sourceforge.net -site:stackoverflow.com – Google Search. These results were convoluted: fastmm PushAllocationGroup site:sourceforge.net – Google Search fastmm PushAllocationGroup site:stackoverflow.com – Google… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, FastMM, Software Development 0

1

VOTES


VOTE

Spring4D Mock – Delphi Unit Testing : Writing a simple spy for the CUT – Stack Overflow

jpluimers jpluimers Reminder to self: write a longer article on Delphi mocking as Spring4D mocking is much better than Delphi Mocks, especially because of code-completion reasons. Spring4D has a Mock record that can return a Mock<T> on… … Read more 5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development, Spring4D 0

1

VOTES


VOTE

Automated testing Windows applications using Katalon and WinAppDriver

jpluimers jpluimers [WayBack] Top 45 Best Automation Testing Tools Ultimate List • Test Automation Made Easy: Tools, Tips & Training Awesomeness A few notes, partially related to Enable your device for development – UWP app developer | Microsoft… … Read more 5 years ago in .NET, Conference Topics, Conferences, Delphi, Development, Event, Software Development, Windows Development, WinForms, WPF 0