Story Category: Development
VOTEDelphi: combining intrinsic functions and inline to have no-code checks on concrete generic instantiation
jpluimers
The title might sound like a lot of gibberish, but the mechanism it describes helps solving a problem when using generics: lack of generic constraints in the compiler. For instance, you cannot constrain on enumeration… … Read more
4 years ago in Delphi, Development, Software Development
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Delphi: quickly failing in use-after free scenarios
jpluimers
Two tricks that can help in use-after-free scenarios. Call ScanMemoryPoolForCorruptions often One of the scenarios of use after free, is that memory blocks get corrupted. FastMM4 normall checks this at process end using the CheckBlocksOnShutdown… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, FastMM, Software Development, Undocumented Delphi
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JSON or binary stream? Delphi 2010: How to save a whole record to a file? – Stack Overflow
jpluimers
A while back I proposed using JSON in order to [WayBack] Delphi 2010: How to save a whole record to a file? – Stack Overflow. There is also a native solution using streaming (which by… … Read more
4 years ago in Delphi, Development, Software Development
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Delphi XE7 introduced const support for dynamic arrays; prior versions used [] only for sets.
jpluimers
A few things to learn from [WayBack] delphi – Constant array of cardinal produces error ‘Constant expression violates subrange bounds” – Stack Overflow: Delphi XE7 introduced compiler support for const dynamic arrays. Compiler errors can completely… … Read more
4 years ago in Delphi, Development, History, Software Development, Undocumented Delphi
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Fun with Delphi RTTI – Dump a TRttiType | The Road to Delphi
jpluimers
For my link archive a non-recursive DumpTypeDefinition method: Here ‘s a sample code of how you can dump the declaration of a TRttiType using the Rtti. Supports classes, records and interfaces. Delphi Use in this… … Read more
4 years ago in Delphi, Development, Software Development
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Delphi compile time assertions
jpluimers
My post on Delphi intrinsic functions that evaluate to consts as a step up to Delphi compile time assertions. This is a corner case of Delphi language use, which can come in very handy when… … Read more
4 years ago in .NET, C++, Delphi, Development, Software Development
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Automatically closing ABBY Finereader 5.0 windows after scanning is completed
jpluimers
Both my Fujitsu ScanSnap ix500 and ix100 scanners can be used from Windows to automatically scan to PDF. PDF conversion is done through the included ABBYY FineReader 5.0 software. However, on each scan, it keeps… … Read more
4 years ago in Delphi, Development, Fujitsu ScanSnap, Hardware, ix100, ix500, Power User, Scanners, Software Development, Windows Development
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Delphi intrinsic functions that evaluate to consts
jpluimers
A long time ago, I wondered Are these really Windows compiler unsupported Delphi Intrinsic Routines about [WayBack/Archive.is] Delphi Intrinsic Routines – RAD Studio. Today, I limited the documented intrinsic list to the constant intrinsic functions: const… … Read more
4 years ago in Delphi, Development, Software Development, Undocumented Delphi
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Delphi: not all lists need to be generic
jpluimers
Lots of Delphi programmers made, or are making the move, of classic Delphi based containers like TObjectList into generic containers like TList<T>. A while ago, I got into a project that needed to extend lifetime… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
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DUnit testing code that should raise a specific exception
jpluimers
A while back, I was writing some code to demonstrate a few inner workings of TInterfacedObject, interface reference counting and mixing object references with interface references. One way to show this is through a test… … Read more
4 years ago in agile, Conference Topics, Conferences, Delphi, Development, Event, Software Development, Unit Testing
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The magic “procedure Touch(var …” construct
jpluimers
procedure Touch(var Argument); begin end; I included the above code in my blog a long time ago (2014 in fact: Delphi: always watch the compiler Warnings), but never got around to explain the why and… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
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F2084 Internal Error: MA1263 – no relevant results
jpluimers
I tried searching for F2084 Internal Error: MA1263 – Google Search which happened on a complete up to date Delphi 10.1 Berlin installation. It came from a large unit testing application using truckloads of generic language constructs,… … Read more
4 years ago in Delphi, Delphi 10.1 Berlin (BigBen), Development, Software Development
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The Delphi interface reference counting compiler bug that will never get fixed as it is marked “as designed”
jpluimers
A long time ago, I write a question [WayBack] delphi – Should the compiler hint/warn when passing object instances directly as const interface parameters? – Stack Overflow in 2010. It was marked by (now former) compiler… … Read more
4 years ago in Delphi, Development, Software Development
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How do I pretty-print JSON in Delphi? – Stack Overflow
jpluimers
For my archive: the [WayBack] How do I pretty-print JSON in Delphi? – Stack Overflow answer by [WayBack] Bob: If you do not want to use any external library, and you’re using a Delphi XE5 or… … Read more
4 years ago in Delphi, Development, JavaScript/ECMAScript, JSON, Scripting, Software Development
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delphi – Faster DirectoryExists function? – Stack Overflow
jpluimers
From a while back: [WayBack] delphi – Faster DirectoryExists function? – Stack Overflow: Q I use DirectoryExists (const PathName : String); to check if a directory is reachable from a computer or not. But if… … Read more
4 years ago in Delphi, Development, Software Development
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