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Posted by jpluimers on 2015/03/30
For anyone keeping up with Pascal history, these uploads are new:
–jeroen
via: Index of /pdf/pascalNews.
Posted in Apple Pascal, BitSavers.org, DEC Pascal, Delphi, Development, History, IBM Pascal, Pascal, Software Development, Standard Pascal, Turbo Pascal, UCSD Pascal | Leave a Comment »
Posted by jpluimers on 2015/02/09
Simon Stuart posted about Lazarus 1.5 (direct from SVN Trunk) running on the Raspberry Pi 2….
Interesting…
For more background info, start with these posts by Simon:
–jeroen
Posted in Development, FreePascal, Lazarus, Pascal, Software Development | Leave a Comment »
Posted by jpluimers on 2015/01/29
Unit testing has been here for a long time, and so has Unit Testing in Delphi. Below a summary of historic links together with some notes on how the state of affairs changed over the years.
I’ll start with one of the first large Delphi Unit Testing articles was a paper by Charlie Calvert summarizing the state of the art on Delphi Unit Testing in 2004. It is present in the wayback machine as DUnit Talk and on his elvenware.com site.
Note that the elvenwere.com site is sometimes slow or hard to reach. Since his evangelist days at Borland/CodeGear, Charlie has moved through a few evangelist jobs at Falafel and Microsoft and finally went back to his old profession: being a great teacher – this time at Bellevue College – often using script based languages and cloud computing, with less focus on his web-presence.
Many of his IT books (during his writing period, he wrote both as Charles Calvert and Charlie Calvert) are still relevant though.
Posted in Agile, Conference Topics, Conferences, Delphi, Dependency Injection, Design Patterns, Development, Event, FreePascal, History, Inversion of Control / IoC, Pascal, Software Development | 3 Comments »
Posted by jpluimers on 2015/01/22
Wow: I feel like having lived under a stone for 8 years, as RosettaCode has been alive since it was founded in 2007 by Mike Mol.
The idea is that you solve a task and learn from that, or learn by seeing how others have solved tasks or draft tasks.
So in a sense it is similar to the Rosetta stone: it has different languages phrasing the same tasks.
There are already a whole bunch of languages on RosettaCode (of which a few are in the categories below), and you can even suggest or add your own languages.
When you want to solve tasks, be sure to look at the list unimplemented tasks by language that leads to automatic reports by language (for instance two of the languages I use most often: C# and Delphi).
I’m sure there are lots of programming chrestomathy sites, even beyond the ones, and it feels very similar to programming kata sites.
–jeroen
Posted in .NET, APL, Awk, bash, Batch-Files, C, C#, C++, COBOL, CommandLine, Delphi, Development, Fortran, FreePascal, Java, JavaScript/ECMAScript, Lazarus, Object Pascal, Office VBA, Pascal, Perl, PHP, PowerShell, PowerShell, Prism, Scripting, sed script, Sh Shell, Software Development, Turbo Prolog, VB.NET, VBS, VBScript, Visual Studio and tools, Web Development | Leave a Comment »
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 »
Posted by jpluimers on 2014/12/04
I’ve done partitioned programming (using various layers for different kinds of functionality) for ages.
The first time I can remember of official terms for it, I already used patterns like that for a couple of years.
Back then the parts were from Object-Oriented Design: Peter Coad, Edward Yourdon, back in a time when each part – back then not called common layer – was called “component”: Read the rest of this entry »
Posted in Delphi, Development, Pascal, Software Development, Turbo Pascal | 2 Comments »
Posted by jpluimers on 2014/10/07
Calling Randomize too often can make your Random numbers even less random.
Sometimes having the Randomize call in a unit initialization section is not practical.
Hence this little method that I think I first wrote back in the Turbo Pascal days:
procedure RandomizeIfNeeded();
begin
if RandSeed = 0 then
Randomize();
end;
–jeroen
Posted in Delphi, Delphi 1, Delphi 2, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi 8, Delphi for PHP, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Development, Pascal, Software Development, Turbo Pascal | 7 Comments »
Posted by jpluimers on 2014/10/01
I’ve been experimenting with the Delphi hinting directives lately to make it easier to migrate some libraries to newer versions of Delphi and newer platforms.
Hinting directives (deprecated, experimental, library and platform) were – like the $MESSAGE directive – added to Delphi 6.
Up to Delphi 5 you didn’t have any means to declare code obsolete. You had to find clever ways around it.
When referring to identifiers marked with a hinting directive, you can get various warning messages that depend on the kind of identifier: unit, or other symbol. Read the rest of this entry »
Posted in Apple Pascal, Borland Pascal, DEC Pascal, Delphi, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 6, Delphi 7, Delphi 8, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Development, Encoding, FreePascal, ISO-8859, ISO8859, Java, Lazarus, MQ Message Queueing/Queuing, QC, Reflection, Software Development, Sybase, Unicode, UTF-8, UTF8 | 2 Comments »
Posted by jpluimers on 2014/09/30
I recently bumped into the NTCore website by Daniel Pisti.
At a client without my own VMs, I wanted to create a DebugBreak like function in Delphi, which I remembered from my Turbo Pascal days to be something like Inline($CC). So searching for both Delphi and INT 3, I found an EXE injection page at NTCore.
In Delphi, you can do this with a procedure like this, which cannot be inlined because it has an asm block:
procedure DebugBreak();
asm
int 3
end;(Reminder to self: sort out what to do here to break on an iOS device; Xcode has an alternative)
The site has information about system internals and software security posted as articles until 2009, when he switched to blog posts. Besides that, he has written a bunch of interesting articles at CodeProject. Read the rest of this entry »
Posted in Delphi, Development, Pascal, Power User, Software Development, Turbo Pascal, Windows, xCode/Mac/iPad/iPhone/iOS/cocoa | 3 Comments »
Posted by jpluimers on 2014/09/25
If you are going to do test driven development and unit testing, you should watch these videos and slide decks, most of them by Miško Hevery:
Posted in .NET, Agile, C#, Delphi, Development, Java, Java Platform, JavaScript/ECMAScript, Pascal, Scripting, Software Development, Unit Testing, VB.NET | 2 Comments »
The Wiert Corner - irregular stream of stuff 