The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Delphi’ Category

Just in case I ever need it again: jed-software.com » Blog Archive » FastMM4 Gui – Source Code.

Posted by jpluimers on 2015/01/07

Just in case I need the FastMM4 Gui – Source Code ever again.

Read the rest of this entry »

Posted in Delphi, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Development, Software Development | Leave a Comment »

Nick Hodges: Man, the chapter on Multi-threading is going to be seriously hard to write.…

Posted by jpluimers on 2015/01/05

A very nice thread around multi-threading in Delphi is evolving at Google Plus: Nick Hodges: Man, the chapter on Multi-threading is going to be seriously hard to write.….

Note: you need to be member of that G+ group to read it, but Nick Hodges allows most people in…

–jeroen

(I also tagged it XE8, as by the time such a book arrives, that Delphi version has most likely come out given the past release frequency <g>)

Posted in Delphi, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 7 Comments »

Blast from the Past: `TThread` got introduced in Delphi 2

Posted by jpluimers on 2015/01/03

Thanks Nick Hodges for asking, and Uwe Raabe for answering:

Yep! Delphi 2 had TThread while Delphi 1 did not.

It resulted in an interesting thread including topics like cooperative multi-tasking and named pipes under DOS by using Turbo Pascal.

Boy, I remember the \pipe\ days and releasing a time slice by calling INT $28, $15 and $2F combinations like this:


asm
int $28
mov ax, $1000
int $15 { DESQview/TopView give up time slice }
mov ax, $1680
int $2F
end;

Note: you can even use INT $2F with AX=$1680 to check if you are running in a DOS x86 VM and other OS checks.

–jeroen

via: Anyone remember which version of Delphi introduced TThread?.

Posted in Borland Pascal, Delphi, Delphi 1, Delphi 2, Development, Pascal, Software Development, Turbo Pascal | 4 Comments »

Delphi XE7: The new Tasks / Parallel Computing Library. Like any library, it is not a magic bullet!

Posted by jpluimers on 2015/01/01

In Delphi XE7, Embarcadero introduced a new Parallel Computing Library.

Programmers – human as they are – see this as a silver bullet, thinking using such a library will take away all your performance issues without having to know about solving race conditions.

Boy are they wrong. The library helps you, and makes it easier. Easier in the sens of “less hard”.

So here is my friendly warning:

Parallel programming is hard. Live with it.

This apart from another important warning:

Delphi XE7 is the first version where this library is introduced. So expect bugs and more bugs.

This isn’t to say you should not use a library for parallel computing (the OmniThreadLibrary has been around for a reason), just that it is hard to get these right, even for library writers. They often get it right better and faster than rolling your own.

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Posted in Delphi, Delphi XE7, Development, Software Development | 5 Comments »

Delphi memory managers – via Tommi Prami G+

Posted by jpluimers on 2014/12/30

There is a nice Delphi memory thread at G+ initiated by Tommi Prami for which I added some links to the memory managers:

  • FastMM (No signs of the Version 5)
  • ScaleMM – Interesting (two versions)
  • SynScaleMM – Fork of the previous
  • SapMM – Just found out about this, but tries to tackle multithreading issue.

More interesting comments (most people seem to favour FastMM, as they can get very good performance out of it even in multi-threaded environments) at There have not been much of the Talk of MemoryManagers lately….

Note there is also TBBMM based on TBB, but it seems unmaintained.

Barry Kelly’s memory manager is based on Boehm-Demers-Weiser GC.

–jeroen

Posted in Delphi, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Development, Software Development | Leave a Comment »

Episode 215: Gang of Four – 20 Years Later : Software Engineering Radio

Posted by jpluimers on 2014/12/23

If you are into serious software development, then this is a 75 minute PodCast you must listen to: Episode 215: Gang of Four – 20 Years Later : Software Engineering Radio.

Abstract

Johannes Thönes talks with Erich Gamma, Ralph Johnson and Richard Helm from the Gang of Four about the 20th anniversary of their book Design Patterns. They discuss the following topics: the definition of a design pattern and each guest’s favorite design pattern; the origins of the book in architecture workshops; the writing of the book together with the community; the rock-star feeling at the release of the book at OOPSLA conference; the influence of the book on the industry; the evolution of the Observer pattern; and new patterns since the book was released. The interview closes with each guest talking about their current projects.

What I liked

Of course I enjoyed the history of the Gang of Four (and am still sad that John Vlissides passed away).

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Posted in .NET, C#, Delphi, Development, Java, Java Platform, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

Delphi Cookbook for USD 5 (or EUR 4.80); actually: get any Packt eBook or video for that price – #packt5dollar

Posted by jpluimers on 2014/12/20

Earlie this month, I wrote a review about Delphi Cookbook.

Well: as of last thursday, you can get that for USD 5 (or EUR 4.80, so better get yourself a USA account: just ensure your address is in the USA).

Heck: until januari 6th, you can get any eBook or Video on Packt for USD 5.

Note there is even an x-Mas countdown on the way (with each day a free book that is readable/downloadable for 24 hours).

There’s over 2500+ books to choose from, so I’m grabbing this chance to learn a few things on OpenCV, Scala, and PowerShell.

–jeroen

via: Book review: Delphi Cookbook by Daniele Teti, Packt publishing.

Posted in .NET, CommandLine, Delphi, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Development, Java Platform, PowerShell, Scala, Scripting, Software Development | Tagged: , | Leave a Comment »

Embarcadero is working on two 64bit iOS compilers – via: Just got another reminder from Apple about 64 bit IOS requirements

Posted by jpluimers on 2014/12/18

Interesting comment by Marco Cantu:

R&D at Embarcadero is working on a 64bit iOS compiler, oh well actually 2 of them, also C++. We’ll support 64bit and “universal binaries” (bundling both 32 and 64 bit binaries) requested by Apple.The Feb 1st requirement is only for new apps, not for updating existing ones, but still we are trying to make a solution available by that time.The roadmap describes the entire year, more than the individual release. This time around we are trying to have it public by January, covering what we expect to deliver in 2015.

–jeroen

via: Just got another reminder from Apple about 64 bit IOS requirements from Feb….

Posted in Delphi, Development, iOS, Mobile Development, Software Development | Leave a Comment »

Delphi and MVVM: the demo by Malcolm Groves

Posted by jpluimers on 2014/12/17

A small follow up on MVVM, MVP, MVC, OOD, etc: it is all about structure and using common sense:

When you want to do MVVM with Delphi, there is a great Delphi MVVM demo that Malcolm Groves gave at CodeRage 7 that is on YouTube.

A few resources you should look at after viewing that demo:

Some of it might work with Delphi XE2, but I think you need XE3 or younger for most of the demos.

–jeroen

Posted in Delphi, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Development, Software Development | 3 Comments »

Clean Coder Blog: The Obligation of the Programmer.

Posted by jpluimers on 2014/12/15

Reminder to all developers: the Obligation of the Programmer on Clean Coder Blog.

By Uncle Bob, exactly a month ago.

–jeroen

Posted in .NET, Delphi, Development, Software Development | Leave a Comment »