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Steve Trefethen

Steve Trefethen is a Director of Engineering at Reply. Contact me

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Some answers: The Delphi Development Process

June 15 2005 5:00PM
Well, thanks to people's comments I can see that there is quite a bit of interest surrounding the our Development Process not to mention the fact that I have more than a few questions to answer. So, let's get to it:
How about about posting some screenshots of you designing an average IDE form, with a bit of code showing?
I'll see what I can do although I'll need to ask around a bit before doing that.
Very interesting, particularly this part: "QA's patented automated testing framework is written in Delphi" I've never heard about a patented automated testing framework before, and would love to hear some details.
There is a lot to be said about our testing framework and it is IMO definately cool technology. Perhaps I can get one of our current QA people to blog about it and I'll ask around. I've been out of QA since 1999 and I'm sure there have been many changes to the framework since but if I can't seem to generate any interest I'll certainly consider blogging about it.

A side note to Julian thanking him for his correction, yeah that was embarrassing. I seriously need a preview button in .Text. To solve that I'm writing this post using the latest internal build of Delphi and editing using the HTML designer. That way I can see the stylesheets (including my custom changes) and edit live right from the Tag Editor at the bottom of the designer. It works great! I think I've found a new way to write posts thanks Julian!

I have a question about the organisation of such a big project: how was handled the build of Kylix and C++Builder ? Both derive from Delphi but are slightly differents.
I know the first release of C++Builder was a separate branch of Development where a few engineers simply took the Delphi code base and started turning it into C++Builder. Eventually, the cost of maintaining two trees was too much the two products were integrated into a single codebase although I'm not exactly sure when C++Builder was merged back into the Delphi branch. When building the Architect SKU on a developer machine we currently get Delphi Win32, Delphi .NET, C#Builder and C++Builder all in one shot. Our Linux products are on separate branches and yes there was lots of merging changes between the codebases since a lot of the code is the same but significant portions were different enough to require another branch. I'll continue to discuss how development works on a project of this size it's pretty cool when you think about it.
Borland acquired a software product called Genitor a while back. That asset was part of the StarBase acquisition. Do you guys use that tool internally at all?
The simple answer the Delphi team does not use Genitor. To be totally honest I went right to the Borland website looking for it and unless it's well hidden I can't see any information about it. That said, I'm not in product marketing and just because I'm not familiar with this product shouldn't reflect at all on the actual state of the product itself. So, please get in contact with someone either in marketing or sales for more information.
Steve, do you do code review? How do you do it?
Yes, although like most teams I suspect we could be doing better in this area and in fact I have a number of things I plan on blogging about related to this area so stay tuned.
How many people are involved in 'the making of Delphi'?
This is a good question for which I don't know the answer. Let me explain... As I mentioned before, the Borland Developer Studio (BDS) is under construction pretty much around the clock these days given the various locations of Borland Developers around the world. Having said that I simply don't know the total number of people working on the team including R&D, QA, Doc, Integration. I would say that it's probably smaller than you'd think. BDS includes integration with StarTeam, ECO and Together so do they count?
In what language is the delphi compiler (dcc32) written in? I know the RTL and the IDE are written in delphi, but what about the compiler? Is it written in delphi, too?
The Delphi compiler is written in C and developed using C++Builder. At least, that's what I see up on Danny's screen whenever I go into his office. :) Our compiler technology is also leveraged by our C++ compiler.
"dogfooding" blecchhh!
I agree although I've certainly heard it enough to believe that it's familar enough nomenclature to be widely understood. FWIW, you'd hardly ever hear that term here at Borland largely because it's not actually necessary. When the tool is written in itself there really isn't a requirement to force yourself to use the app you develop because it's the only way for you to get work done.
Why should this come as any kind of suprise, that Borland use Borland tools to generate Borland tools?
For Borland customers it shouldn't. In fact, I think most Delphi customers would be shocked if Delphi weren't written in Delphi but how about asking the same thing about a VB user. What I can say is that I'm not surprised that VB isn't written in VB.
Did you expect them to be using Microsoft tools?
Actually, we do use MS tools. In fact, we use the C# compiler for a number of pieces of Delphi for .NET. We don't really look at it as some sort of war with Microsoft. We use the tools that allow us to get our job done and thankfully most of the time it's a Borland tool.
The interesting question is, are the Delphi developers using the current alpha/beta version for development of the new version, or the previous version?
Absolutely. Typically, when a developer finds a stable build they'll likely stick with it for anywhere from a few days to a couple of weeks depending on what sort of work their doing. One benefit of using the latest build is that you get to use the cool new features that are coming in and influence how they work and give immediate feedback.
Other things I can think of to cover are:
Whoa, Dan, I'll get there but it's going to take some time but thanks for filling my idea box! :)

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