Archive for the ‘Event’ Category
Posted by jpluimers on 2016/05/24
The background here was a quick project at a client where many .dproj files were in the same directory, but they suffered from conditional define differences. Which meant that even if they were all using the DEBUG configuration, some defines in the .dproj directories were different therefore poisoning shared .DCU files (as Delphi does not automatically rebuild them when the sources have not changed even though the IDE switched to a new project).
There was no quick possibility to reorganise the project structure (a combination of a version system history being problematic and potentially lots of relative path references in the .dproj and .dpr files could still be broken) so I wanted different “Unit Output Directories” for each project preferably using non-hardcoded project name.
So I tried putting $(PROJECTNAME) in a “Unit Output Directory”. But unlike build-events – where that one has a value – in the Directory it hadn’t.
To cut things short, Uwe Raabe did some spelunking in the .dproj file and found that $(SanitizedProjectName) was recognised so I switched to .\$(Platform)\$(Config)\$(SanitizedProjectName).
Putting it in the OutputDirectory (where your .EXE gets emited) fails for most part. Yes, the .EXE gets put in the right directory. No, the debugger cannot find it as it thinks it needs to use %SanitizedProjectName%. No for TestInsight: it cannot find the EXE either because of the % expansion.
Based on SanitizedProjectName, I did some more spelunking coming with the below list. Remember though:
Only tested for Win32 applications for Delphi XE8
I assembled the list by doing a quick sed on a Delphi XE8 Win32 .dproj file transforming all XML element names to $() form then running it through a uniq like script. After that I added each of them in a “Unit Output Directory” prepended with .\_\ (well I cheated a bit, I did them in groups separated by a back-slash and went back to single items in case of failures. A kind of ‘binary search’).
Ensure the ones you use, are defined before you use them. For example: the definition of SanitizedProjectName need to be in the .dproj file before actually using SanitizedProjectName.
These expand to empty strings:
Read the rest of this entry »
Posted in Conference Topics, Conferences, Delphi, Delphi XE8, Development, Event, Software Development | 2 Comments »
Posted by jpluimers on 2016/04/21
The below fragment is one of the favourite kinds of examples in the Ruby world:
5.times { |i| print i, " " }
It uses the times method on Integer and prints:
0 1 2 3 4
There are many implementations of this in other languages, for instance Ruby’s ‘times()’ function in C# | Of Code and Me (which the WordPress.com editor fucked up as it replaced Action<int> with Action which is a totally different thing, so the gist with code is below.
public static class IntExtensions
{
public static void Times(this int i, Action func)
{
for(int j = 0; j < i; j++)
{
func(j);
}
}
}
Which you use as
5.Times(i => Console.Write(i));
It’s slightly off as it prints:
01234
I know; nitpicking, but this code works (did I ever tell I love .NET fiddle?):
5.Times(i => Console.Write("{0} ", i));
Well, Mason Wheeler encouraged Asbjørn Heid for the below Ruby Mania in Delphi; just read the comments at In C# nearly everything is an object, so when writing a unit test for a string…
Since the WordPress.com editor fucks up TProc<Integer> into TProc and TProc behaves differently from TProc<Integer>, I’ve included a gist link with the actual code below.
program RubyManiaConsoleProject;
uses
System.SysUtils;
type
TRubyMania = record helper for ShortInt
procedure times(const IterBody: TProc);
end;
procedure TRubyMania.times(const IterBody: TProc);
var
i: Integer;
begin
for i := 0 to Self-1 do
IterBody(i);
end;
begin
5.times(
procedure(i: Integer)
begin
Write(i, ' ');
end
);
end.
It also shows why I hardly use anonymous methods in Delphi: they’re way too verbose.
–jeroen
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Posted in Conference Topics, Conferences, Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Event, Software Development | 1 Comment »
Posted by jpluimers on 2015/09/09
Over the two decades I’ve come across a lot of Delphi projects.
All of them have one thing in common: even for functionality available in the Delphi libraries, much of that code was self-written.
You even see this in big libraries that have shipped with Delphi bit not originate from the Delphi team. Take Indy: lots of “roll your own” in it.
I’ve made some thoughts about that, and see these main causes with the points below.
What’s your thought on this?
Read the rest of this entry »
Posted in Conference Topics, Conferences, Delphi, Delphi 10 Seattle, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Event, QC, Software Development | 1 Comment »
Posted by jpluimers on 2015/07/15
Thanks [Wayback] Jørn Einar Angeltveit for sharing this a while ago:
A session by Jon Skeet and Tony the Pony (which has strong teeth) presented during the Polish DevDay 2013 in Kraków, Poland.
[Wayback] +Jon Skeet’s speech [Wayback] “Back to basics” is really a good watch.
In a funny way, he explains why the simplest fundamentals of computer software text, dates and numbers can cause some real headache for the programmer…
In case you didn’t know: Jon Skeet is “Chuck Norris” on [Wayback] stackoverflow.com:
The subtitle is “the mess we’ve made of our fundamental data types”.
Some of the topics covered:
Read the rest of this entry »
Posted in .NET, C#, Conference Topics, Conferences, Delphi, Development, Encoding, Event, internatiolanization (i18n) and localization (l10), Java, Java Platform, Jon Skeet, Pascal, Scripting, Software Development, Unicode | 2 Comments »
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.
Charlie Calvert
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 2014/12/01
Every vendor should publish version numbers like this to make it easier for their customers to check if they are current or not.
I can’t promise to have a complete list, or the latest versions, but I will update with the versions I have used.
–jeroen
Posted in Conference Topics, Conferences, Delphi, Delphi XE, Delphi XE2, Development, Event, Software Development | 8 Comments »
Posted by jpluimers on 2014/11/20
Ever since the Delphi build engine got changed to MS Build in Delphi 2007, many people use Delphi build events. Their order is prebuild, prelink and postbuild (or maybe better spelled pre-build, pre-link and post-build).
Before Delphi 2007, you had to fiddler with project groups and dependencies to fake pre-build and post-build events. For an example see Pre and Post-Build Automation in Delphi.
One of the really good things about these events is that build events appear in the output tab of the messages window.
One of the really bad things is that there is hardly any documentation about the build events.
At least two important things are missing:
- How the lines of a build event are actually executed
- How parameter expansion works inside build events
Let’s explain these. Read the rest of this entry »
Posted in Conference Topics, Conferences, Delphi, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Development, Event, FastMM, QC, Software Development | 5 Comments »
Posted by jpluimers on 2014/11/04
Normally you would not want to use a reserved word as an identifier. But sometimes it can be very convenient, for instance for a code generator that wraps remoting calls or does ORM.
Both Delphi and C# have an escape for this:
The prefixes are to tell the compiler knows you really know what you are doing, and are using a reserved word as an identifier.
The cool thing: in the Run Time Type Information (Delphi) or Reflection (C# and VB.NET) you will see the names without the prefix.
Some examples from StackOverflow: Read the rest of this entry »
Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Conference Topics, Conferences, Delphi, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 8, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Development, Event, Jon Skeet, Software Development, VB.NET, VB.NET 10.0, VB.NET 11.0, VB.NET 7.0, VB.NET 7.1, VB.NET 8.0, VB.NET 9.0 | Leave a Comment »
Posted by jpluimers on 2014/08/28
Quiz questions:
- Does the below unit test succeed or fail?
- Why?
procedure TestHResult.Test_EOleException;
var
OleException: EOleException;
IResult: LongInt; // == HResult
UResult: Cardinal; // == DWord
begin
IResult := $800A11FD;
UResult := $800A11FD;
try
OleException := EOleException.Create('message', $800A11FD, 'source', 'helpfile', -1);
raise OleException;
except
on E: EOleException do
begin
if E.ErrorCode = $800A11FD then
Exit;
Self.CheckEquals(E.ErrorCode, $800A11FD, 'E.ErrorCode should equal $800A11FD');
end; // E: EOleException
end;
end;
Read the rest of this entry »
Posted in Conference Topics, Conferences, Delphi, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Development, Event, Software Development | 2 Comments »
The Wiert Corner - irregular stream of stuff 