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Everything posted by Sherlock
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A comprehensive guide to Delphi programming language functions and procedures
Sherlock replied to pouyafar's topic in VCL
It was called Eliza back then. ChatGPT is just Eliza on Steroids. -
Almost every "call" is potentially dangerous. Asking for a language or a dialect of an existing language without potentially dangerous calls will leave you with nothing, hence the lack of answers from the people you contacted. It is up to you to find out what weaknesses a language has and how to either overcome them or, if to cumbersome, avoid the language altogether. Then you also have to take into account the security issues the system running your software may have. Windows has quite the "rap sheet", when it comes to vulnerabilities. But still it is a solid OS to run your software on, if you are aware of these issues. You may choose to run in a browser...that in itself may expose you to new risks you'll have to learn about, risks that may even be specific to the OS running the browser, so you'll end up checking out combinations of browsers and OSes even over different versions, a ton of permutations to evaluate. And so far you haven't even looked at hardware. What about the USB ports on a standard PC? How can you verify that they are not misused? As you see cyber security is very expensive, thinking about what might go wrong is just the first step of many. Real security however is just an illusion, just like the idea of error free software. What you need to have is risk assessment together with a catalog of countermeasures and assess how useful or indispensable your software really may be. If the benefit-risk-ratio is acceptable, go ahead build your software, if not... I seem to have drifted of, sorry.
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Is asked ChatGPT: What is Internet Component Suite for Delphi?
Sherlock replied to FPiette's topic in ICS - Internet Component Suite
ChatGPT is way to verbose with its answers and takes forever to finally get to the point. I don't consider it fascinating, and I don't consider it to be an AI. It has had it's moments and those have been enough for one investor or another to inject money into the project or to actually assume they might be able to put it to use (Bing - imagine the loooong answers for a simple search). In short ChatGPT is Eliza without the need to program responses but have responses stored in a DB filled by training. -
lire fichier binaire hexadecimal en delphi
Sherlock replied to krimo's topic in RTL and Delphi Object Pascal
You want to compare two binary files, if I understand correctly. Here is a program that does that: https://www.cjmweb.net/vbindiff/ -
No, it means you can install Skia4Delphi and use it in your project, and after following the steps pointed out to you, you can use "right to left" as originally expected.
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Send message frmo VCL app to another machine in lan
Sherlock replied to mikak's topic in General Help
Also keep in mind, if this software is supposed to be commercial you will have to look into encrypting the communication. TLS will have to be minimum. -
I would have put that check into an SMTP server. And...surprisingly the good ones do that.
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Given the complexity and the tendency of developers to always suggest some totally different approach , here is my completely different suggestion. You seem to have the need to validate an e-mail address before storing it. How about sending a test mail before doing that. That way you get to birds with one stone: Verify the address, and get the permission to use it... a must have in Europe.
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The Delphi Certified Developer // To prepare for the exam
Sherlock replied to skyzoframe[hun]'s topic in Tips / Blogs / Tutorials / Videos
Oh, right! I just had the Master in mind. And that I am not... -
The Delphi Certified Developer // To prepare for the exam
Sherlock replied to skyzoframe[hun]'s topic in Tips / Blogs / Tutorials / Videos
I don't think I could pass the exam But some of our MVPs such as @Uwe Raabe have, perhaps he might share some insights. -
Keep getting Expected and identifier but received VAR same for IN and Contains
Sherlock replied to Linuxuser1234's topic in FMX
Well take a step back then. Do you know what you are doing? You are mixing two things here, maybe at first try this with just the important one and save the syntactic sugar of inline variables (which may still be buggy) for later: procedure TGISEngine.AddFilenames(const AFilenames: TGISFilesnamesSHP); var F: string; // I'm just guessing here, and maybe that is the compilers issue as well begin if (Length(AFilenames) > 0 ) then for F in AFilenames do if not FFilenames.Contains(F) then FFilenames.Add(F); end; Later on, you may read what the Docwiki has to say about the limited abilities the compiler has regarding type inference and discover their examples for inlines in for...in loops all have a type declaration. -
Just my two cents as a person who has been developing commercial software with Delphi for over 20 years now (where has all the time gone? sigh). Whenever there have been issues with the software, one thing turned out to be true: The DB was almost always the problem. That, or the way DB data was being handled. Rethinking table design and handling of DB-aware and not-DB-aware components have always done the trick. But feel free to produce a minimal reproducible example for the folks at Embarcadero, if you are 100% sure that Delphi is at fault.
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Possible changes to string/char handling in Delphi 11(.2)?
Sherlock replied to omnibrain's topic in General Help
That is a good thing. Anything built into Delphi slowly decays due to lack of maintenance. Until one day it produces only errors and management has to decide wether to trash it or build something around it to try and fix it. Most prominent recent example: ErrorInsight fixed through LSP. Or the Parnassus tools...taking longer and longer to appear in GetIt with each new Delphi version. -
For an deeper understanding read here: https://www.exploringbinary.com/why-0-point-1-does-not-exist-in-floating-point/ And this is your solution: https://docwiki.embarcadero.com/Libraries/Sydney/en/System.Math.IsZero if you want to check for zero values.
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Function with 2 return values ?
Sherlock replied to Henry Olive's topic in RTL and Delphi Object Pascal
My hammer beats every other tool every time. -
Everybody cool down please, and don't get personal. Thank you.
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Installation of fresh Delphi 11.2 fails: Exception in module rtl280.bpl
Sherlock replied to Hans♫'s topic in General Help
Well, which Windows version is this? Windows 7 is not supported anymore, AFAIK. -
Check out AddFontResourceEx and RemoveFontResourceEx from the Windows API. Note that while the font is installed, it may be used by any other program in your system unless you load it FR_PRIVATE.
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Is there a way to "Search" for only FMX library information?
Sherlock replied to Al T's topic in FMX
And then there's always: https://docwiki.embarcadero.com/Libraries/Alexandria/en/FMX -
So, I have no Idea, what the issue really is, it is not FileExists. At least the way I try to reproduce missing privileges no exception is raised... so I retract that statement as bogus. Sorry for the fuss.
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Just happened to me in at least 10.4.2 may even be so in 11.2. But maybe it is something else, will try to put together a small demo, time permitting.
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CodeInsight: Loading project [...] hanging
Sherlock replied to omnibrain's topic in Delphi IDE and APIs
Design time DB connections have been a pain for me in the past in several ways. Normally now I have no connection, and enable only when needed (which is rarely the case anyhow). Result is way less problems. -
Just for completeness sake it should be noted, that FileExists will raise an exception, if the current user has insufficient rights to read the file. Turns out, that is completely false. Sorry about that.
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how can i make my slider which is a TRoundrect move without getting Access Violation
Sherlock replied to Linuxuser1234's topic in FMX
I see that F is indeed checked further up. I only considered the last quoted portion of code. As for the "tutorial" it is quite tedious to follow. I personally hate video tutorials, because they are always to slow when it does not matter and to fast when it does. A readable tutorial is worth so much more than that. Anyway... I recreated the project as stated in the video,I even copied your code, and it works without errors. You must have done something different along the line...especially since your screenshot somewhat differs from the video. -
how can i make my slider which is a TRoundrect move without getting Access Violation
Sherlock replied to Linuxuser1234's topic in FMX
Well, don't typecast without checking if the type fits. You need to check if F really is a TLayout and if child 0 really is a TLine. Something like: if F is TLayout then if TLayout(F).Children[0] is TLine then L:=TLine(TLayout(F).Children[0]); On the other hand you should only type cast when necessary. TFMXObject has a perfectly fine Children property no need to cast F into a TLayout. Check your entire code for these things and you should have eliminated one cause for the AV.