Posted by jpluimers on 2019/04/04
This shows you how to do 2.5D isometric projection in Delphi using Firemonkey: [WayBack] Firemonkey/Isometric at master · tothpaul/Firemonkey.
[WayBack] Isometric projection – Wikipedia.
Via: [WayBack] I wonder what the best approach would be to use FireMonkey to develop an isometric 2.5D game in the “classic” way… – Fl Ko – Google+
–jeroen
Posted in Delphi, Development, FireMonkey, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/04
One of the things when fixing bugs in an old codebase is wading through technical debt.
A quick win is to get rid of duplicate GUIDs when interface portions have been copy-paste re-used:
as casts even if they are different.These searches help big time: it shows the duplicate GUIDs if they have been indented all the same way. Good enough for most situations.
grep -Sh "\[\'{" *.pas | sort
grep -rh "\[\'{" *.pas | sort
It depends which flavour of grep you use (gnu or regular) to specify recursion.
Note that findstr doesn’t cut it as it always shows the filename: [WayBack] List files recursively showing only full path and file size from Windows Command Prompt – Super User
** this compiles without warning:
program NoWarningOnDuplicateInterfaceGUID;
{$APPTYPE CONSOLE}
{$R *.res}
uses
System.SysUtils;
type
IInterface1 = interface
['{ECF26C39-CBFF-488E-A3AB-2629726F1005}']
end;
IInterface2 = interface
['{ECF26C39-CBFF-488E-A3AB-2629726F1005}']
end;
var
Subject: IInterface;
begin
try
(Subject as IInterface1)._Release;
(Subject as IInterface2)._release;
except
on E: Exception do
Writeln(E.ClassName, ': ', E.Message);
end;
end.
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/03
I bumped into a similar situation again, and my conclusion is that getting out of PlasticSCM woes is more cumbersome to me than getting out of similar git woes.
[WayBack] Jeroen Pluimers on Twitter: “While checking in to @plasticscm server and having a branch selected in the PlasticSCM GUI: ————————— Error ————————— No checkout branch found. ————————— OK —————————… https://t.co/k13K06mOFX”
Basically
--------------------------- Error --------------------------- No checkout branch found. --------------------------- OK ---------------------------
is the Plastic GUI way of saying “I think you have checked out branch A, but while checking that one in, I could not find it on the server, could it be that it got renamed or deleted?”.
The way to reliably get out of this situation (even if you are in a merge):
robocopy /mir is your friend here)–jeroen
PS, the Twitter thread:
Posted in Development, PlasticSCM, Software Development, Source Code Management | Leave a Comment »
Posted by jpluimers on 2019/04/03
This is so cool: [WayBack] paulcbetts/refit: The automatic type-safe REST library for Xamarin and .NET. It’s inspired by Square’s [WayBack] Retrofit library which does the same for Java.
They basically allow you to use attributes on interfaces to define a type-safe wrapper around any REST interface, then instantiate a connection to it for making calls.
No more manual HttpClient fiddling!
Since it requires only .NET 1.4, you can basically run it on any platform as it’s supported covered by the implementations .NET Core, Mono and the full .NET Framework.
Quite a lot of projects already use it; I got there via the first link:
–jeroen
Via: [WayBack] Exploring refit, an automatic type-safe REST library for .NET Standard https://www.hanselman.com/blog/ExploringRefit… – Jeroen Wiert Pluimers – Google+
Posted in .NET, C#, Development, Java, Java Platform, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/03
Reminder to self: [WayBack] It took me a while to address an awful IDE crash issue. If you install a design time package which uses RTTI to populate custom attributes declared in… – Baoquan Zuo – Google+
TL;DR: be very careful using the built-in RTTI support objects as when they refer to custom defined attributes in packages, and the packages get unloaded, the cache does not get flushed.
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/02
For my link archive:
–jeroen
Posted in Agile, Development, Software Development, Unit Testing | Leave a Comment »
Posted by jpluimers on 2019/04/02
Mark Seeman posted a great answer with insights into how to architect applications: [WayBack] architecture – How much is too much Dependency Injection? – Software Engineering Stack Exchange
Some topics covered:
It links to a ton of other good reads for a quiet long weekend as well:
–jeroen
via: [WayBack] Favour Pure DI – Linas Naginionis – Google+
Posted in Design Patterns, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/02
Boy I wish that QC was still up and QualityPortal was publicly indexable as that would have saved me quite a bit of time tracking this down. Luckily I got help from Stefan Glienke (who maintains the awesome Spring4D library based on modern Delphi compiler support) when I mentioned
How good are you with reference to function?
I’ve an odd compiler thing throwing errors when using interfaces but not with classes.
So, for posterity:
Unlike C#, in Delphi interface methods are not compatible with method references or methods of object.
This has many manifestations, which means you can get a variety of compiler errors. I’ve listed the ones I could find below, but presume there are more and if I find more will update this post.
These are the errors you can get:
These are the (now defunct, but used to be publicly accessible) QC and QualityPortal (needs sign on) entries (thanks Stefan Glienke and Blaise Thorn for reporting these):
The really frustrating part is that the RSP is marked as “new feature” whereas clearly it isn’t, so it probably never will be fixed.
A workaround for now is to wrap the interface method references with:
Examples are in the code below that also shows this works fine and dandy in C#.
–jeroen
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 10.2 Tokyo (Godzilla), Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development, Spring4D | Leave a Comment »
Posted by jpluimers on 2019/04/01
Steps:
Via [WayBack] Kristian Köhntopp – Google+
Related:
Bernd Paysan’s:
The three most 2. common race
1. off-by-one software conditions
errors:
counting
core dumped (Segmentation fault in printf)
–jeroen
Posted in Development, Fun, Multi-Threading / Concurrency, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/01
I know I’m going to need this one day: [WayBack] debugging – Find what javascript changes the DOM? – Stack Overflow
Via: [WayBack] Javascript “Why”: Wenn ich eine fertig geladene Webseite sehe und wissen möchte, warum “dieses Element da” (Bild, Script, div) geladen worden ist, wie… – Kristian Köhntopp – Google+
–jeroen
Posted in Chrome, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Browsers, Web Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 