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Showing content with the highest reputation on 05/17/24 in all areas
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What do you think of "Local Global variables"
Uwe Raabe replied to Tommi Prami's topic in RTL and Delphi Object Pascal
Usually, yes! Peganza Pascal Analyzer even has a report for that: -
Delphi Parser/Compiler Limitation?
Kazantsev Alexey replied to Larry Hengen's topic in Algorithms, Data Structures and Class Design
Use ampersand operator, Luke. program Project2; {$APPTYPE CONSOLE} uses System.TypInfo; {$SCOPEDENUMS ON} type TEnums = (&TRY, &SHR, &XOR, &IS, &AS); begin WriteLn(GetEnumName(TypeInfo(TEnums), Ord(TEnums.SHR))); WriteLn(GetEnumValue(TypeInfo(TEnums), 'shr')); ReadLn; end. Output: SHR 1 -
1 pointuntilHi Not sure the calendar is the best way to announce it, but it's an event ending in 12 days, so I try. 😉 As you know GDK Software organizes the Delphi Summit 2024 in June in Amsterdam. They allow me to give a free 2 days pass to someone and I started to think how I can do it not only with my Twitch viewers. The best idea was to create a lottery and open it with other gift prizes. So here we are. If you want to try your chance and participate you can go to https://loterie.developpeur-pascal.fr/ every day until the May 29th at 1PM (GMT+2). The prizes are: - 1 pass for the Delphi Summit 2024 (IRL or online if you can't be there) - 10 "Delphi" collector mugs (only for European citizens for logistic reasons) - 50 coupons to access all my private contents about Delphi and web programming (videos, live coding replays, training courses, blog posts) for French speaking people (use the French version of the website to contest in this category) If you have any question or suggestion, don't hesitate to contact me.
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Wow! super fast response. I wasn't aware of that useful site - so thanks for the link. I will try this xsd and see how I get on.... Thank you Lars.
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You have listed chatGPT. Which version(s) were you using? My own experience is that neither the free chatGPT nor Gemini are any good for producing Delphi code. I haven't tried any others.
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What do you think of "Local Global variables"
Stefan Glienke replied to Tommi Prami's topic in RTL and Delphi Object Pascal
While I at times use local routines I avoid accessing outer scope local variables like the plaque because it usually generates quite a huge and often unnecessary stack frame. -
What do you think of "Local Global variables"
PeterBelow replied to Tommi Prami's topic in RTL and Delphi Object Pascal
Nested procedures/functions are basically legacy from the times of Turbo Pascal, before we could write properly object-oriented code. They are still useful for procedural code, but if you organize your program's tasks into classes then you can replace nested procedures with private methods of the class and either pass needed values as parameters or move the local variables used as private fields to the class declaration. IMO that gives a much cleaner and easier to understand design, and it keeps down the size of the methods. -
What do you think of "Local Global variables"
dummzeuch replied to Tommi Prami's topic in RTL and Delphi Object Pascal
I use them sometimes as a convenient way not to pass too many parameters. As far as I remember this comes with a performance penalty though. I declare those shared variables at the top of the main procedure, above the nested procedures, and those that are not shared below the nested procedures. -
Scaling forms is always problematic. We can see this every day with applications (not only Delphi ones) when used in a mixed DPI environment. Although I don't actually suggest to use it, there is an option to switch the form designer using a special PPI. The drawback is that it is used for all forms and not only for the large ones. Naively thinking that scaling the form display could easily be done by drawing onto a bitmap and simply display that downscaled, but that would imply that the whole user interaction has to be made with a bitmap instead of real controls. The effort to implement that with all its edge cases is way more than one would expect.
