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As Joel points out , we've made a draft of the SSCLI 2.0 Internals book available for download (via his blog). Rather than tell you all about the book, which Joel summarizes quite well, instead I thought I'd tell you about the process by which the book came to be. Editor's note: if you have no interest in the process by which a book can get done, skip the rest of this blog entry. One thing that readers will note that's different about this version of "the Rotor book" is that it's not being done through one of the traditional publishers. This is deliberate. As Joel and I talk about on the .NET Rocks! show we did together , the first Rotor book was on the first version of Rotor, which shipped shortly after the .NET 1.1 bits shipped to customers. That was back in the summer of 2001. Dave, Geoff and I shipped the book, I did a few conference talks on Rotor for the relatively few people who had an interest in what was going on "under the hood" of the CLR, and then we all sort of parted ways. (Dave retired from Microsoft entirely shortly thereafter, in order "to focus on the two things that matter in life: making music and making wine", as he put it.) Mission accomplished, we moved on. Meanwhile, as we all knew would happen, the world moved on--Whidbey (.NET 2.0) shipped, and with it came a whole slew of CLR enhancements, most notably generics. Unlike how generics happened in the JVM, CLR generics are carried through all the way to the type system, and as a result, a lot of what we said in the first Rotor book was instantly rendered obsolete. Granted, one could always grab the Gyro patch for Rotor and see what generics would have looked like, but even that was pretty much rendered obsolete by the emergence of the SSCLI 2.0 drop, bringing the Rotor code up to date with the Whidbey production CLR release. Except the book was, to be blunt about it, left behind. Speaking honestly, the book never broke any sales records. Sure, for a while there it was the #1 best-selling book (in Redmond, WA, to my total shock and surprise) on Amazon, but we never had the kind of best-seller success that that of, say, Programming Ruby or pick-your-favorite-ASP.NET book. In the book publishing world, this was kind of the moral equivalent to watching your neighbors' slide show of their vacation: boring for most people not in the pictures, unless you were really interested in either the place they were visiting or what they did there. Most of our audience were either people working on the Read More...
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This comment deserves response: First of all, if you're quoting my post, blocking out my name, and attacking me behind my back by calling me "our intrepid troll", you could have shown the decency of linking back to my original post. Here it is, for those interested in the real discussion: http://www.agilesoftwaredevelopment.com/blog/jurgenappelo/professionalism-knowledge-first Well, frankly, I didn't get your post from your blog, I got it from an email 'zine (as indicated by the comment "This crossed my Inbox..."), and I didn't really think that anybody would have any difficulty tracking down where it came from, at least in terms of the email blast that put it into my Inbox. Coupled with the fact that, quite honestly, I don't generally make a practice of using peoples' names without their permission (and my email to the author asking if I could quote the post with his name attached generated no response), so I blocked out the name. Having said that, I'm pleased to offer full credit as to its source. Now, let's review some of your remarks: "COBOL is (at least) twenty years old, so therefore any use of COBOL must clearly be as idiotic." I never talked about COBOL, or any other programming language. I was talking about old practices that are nowadays considered harmful and seriously damaging. (Like practising waterfall project management, instead of agile project management.) I don't see how programming in COBOL could seriously damage a business. Why do you compare COBOL with lobotomies? I don't understand. I couldn't care less about programming languages. I care about management practices. Frankly, the distinction isn't very clear in your post, and even more frankly, to draw a distinction here is a bit specious. "I didn't mean we should throw away the good stuff that's twenty years old, only the bad stuff!" doesn't seem much like a defense to me. There are cases where waterfall style development is exactly the right thing to do a more agile approach is exactly the wrong thing to do--the difference, as I'm fond of saying, lies entirely in the context of the problem. Analogously, there are cases where keeping an existing COBOL system up and running is the wrong thing to do, and replacing it with a new system is the right thing to do. It all depends on context, and for that reason, any dogmatic suggestion otherwise is flawed. "How can a developer honestly claim to know "what it can be good for", without some kind of experience to back it?" I'm talking about gaining Read More...
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Recently this little gem crossed my Inbox.... Professionalism = Knowledge First, Experience Last By J----- A----- Do you trust a doctor with diagnosing your mental problems if the doctor tells you he's got 20 years of experience? Do you still trust that doctor when he picks up his tools, and asks you to prepare for a lobotomy? Would you still be impressed if the doctor had 20 years of experience in carrying out lobotomies? I am always skeptic when people tell me they have X years of experience in a certain field or discipline, like "5 years of experience as a .NET developer", "8 years of experience as a project manager" or "12 years of experience as a development manager". It is as if people's professional levels need to be measured in years of practice. This, of course, is nonsense. Professionalism is measured by what you are going to do now ... Are you going to use some discredited technique from half a century ago? • Are you, as a .NET developer, going to use Response.Write, because you've got 5 years of experience doing exactly that? • Are you, as a project manager, going to create Gantt charts, because that's what you've been doing for 8 years? • Are you, as a development manager, going to micro-manage your team members, as you did in the 12 years before now? If so, allow me to illustrate the value of your experience... (Photo of "Zero" signs) Here's an example of what it means to be a professional: There's a concept called Kanban making headlines these days in some parts of the agile community. I honestly and proudly admit that I have no experience at all in applying Kanban. But that's just a minor inconvenience. Because I have attained the knowledge of what it is and what it can be good for. And now there are some planning issues in our organization for which this Kanban-stuff might be the perfect solution. I'm sure we're going to give it a shot, in a controlled setting, with time allocated for a pilot and proper evaluations afterwards. That's the way a professional tries to solve a problem. Professionals don't match problems with their experiences. They match them with their knowledge. Sure, experience is useful. But only when you already have the knowledge in place. Experience has no value when there's no knowledge to verify that you are applying the right experience. Knowledge Comes First, Experience Comes Last This is my message to anyone who wants to be a professional software developer, a professional project manager, or a professional development Read More...
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The Pragmatic Programmer says, "Learn a new language every year". This is great advice, not just because it puts new tools into your mental toolbox that you can pull out on various occasions to get a job done, but also because it opens your mind to new ideas and new concepts that will filter their way into your code even without explicit language support. For example, suppose you've looked at (J/Iron)Ruby or Groovy, and come to like the "internal iterator" approach as a way of simplifying moving across a collection of objects in a uniform way; for political and cultural reasons, though, you can't write code in anything but Java. You're frustrated, because local anonymous functions (also commonly--and, I think, mistakenly--called closures ) are not a first-class concept in Java. Then, you later look at Haskell/ML/Scala/F#, which makes heavy use of what Java programmers would call "static methods" to carry out operations, and realize that this could, in fact, be adapted to Java to give you the "internal iteration" concept over the Java Collections: 1: package com.tedneward.util; 2: 3: import java.util.*; 4: 5: public interface Acceptor 6: { 7: public void each(Object obj); 8: } 9: 10: public class Collection 11: { 12: public static void each(List list, Acceptor acc) 13: { 14: for (Object o : list) 15: acc.each(o); 16: } 17: } Where using it would look like this: 1: import com.tedneward.util.*; 2: 3: List personList = ...; 4: Collection.each( new Accpetor() { 5: public void each(Object person) { 6: System.out.println( "Found person " + person + ", isn't that nice?" ); 7: } 8: }); Is it quite as nice or as clean as using it from a language that has first-class support for anonymous local functions? No, but slowly migrating over to this style has a couple of definitive effects, most notably that you will start grooming the rest of your team (who may be reluctant to pick up these new languages) towards the new ideas that will be present in Groovy, and when they finally do see them (as they will, eventually, unless they hide under rocks on a daily basis), they will realize what's going on here that much more quickly, and start adding their voices to the call to start using (J/Iron)Ruby/Groovy for certain things in the codebase you support. (By the way, this is so much easier to do in C# 2.0, thanks to generics, static classes and anonymous delegates... 1: namespace TedNeward.Util 2: { 3: public delegate void EachProc<T>(T obj); 4: public static class Collection Read More...
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Steve Yegge posted the transcript from a talk on dynamic languages that he gave at Stanford. Cedric Beust posted a response to Steve's talk, espousing statically-typed languages. Numerous comments and flamewars erupted, not to mention a Star Wars analogy (which always makes things more fun). This is my feeble attempt to play galactic peacemaker. Or at least galactic color commentary and play-by-play. I have no doubts about its efficacy, and that it will only fan the flames, for that's how these things work. Still, I feel a certain perverse pleasure in pretending, so.... Enjoy the carnage that results. First of all, let me be very honest: I like Steve's talk. I think he does a pretty good job of representing the negatives and positives of dynamic languages, though there are obviously places where I'm going to disagree: "Because we all know that C++ has some very serious problems, that organizations, you know, put hundreds of staff years into fixing. Portability across compiler upgrades, across platforms, I mean the list goes on and on and on. C++ is like an evolutionary sort of dead-end. But, you know, it's fast, right?" Funny, I doubt Bjarne Stroustrup or Herb Sutter would agree with the "evolutionary dead-end" statement, but they're biased, so let's put that aside for a moment. Have organizations put hundreds of staff years into fixing the problems of C++? Possibly--it would be good to know what Steve considers the "very serious problems" of C++, because that list he does give (compiler/platform/language upgrades and portability across platforms) seems problematic regardless of the langauge or platform you choose--Lord knows we saw that with Java, and Lord knows we see it with ECMAScript in the browser, too. The larger question should be, can, and does, the language evolve? Clearly, based on the work in the Boost libraries and the C++0X standards work, the answer is yes, every bit as much as Java or C#/.NET is, and arguably much more so than what we're seeing in some of the dynamic languages. C++ is getting a standardized memory model, which will make a portable threading package possible, as well as lambda expressions, which is a far cry from the language that I grew up with. That seems evolutionary to me. What's more, Bjarne has said, point-blank, that he prefers taking a slow approach to adopting new features or ideas, so that it can be "done right", and I think that's every bit a fair position to take, regardless of whether I agree with it or not. (I'd Read More...
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Not too long ago, Don wrote : The three most “personal” choices a developer makes are language, tool, and OS. No. That may be true for somebody who works for a large commercial or open source vendor, whose team is building something that fits into one of those three categories and wants to see that language/tool/OS succeed. That is not where most of us live. If you do, certainly, you are welcome to your opinion, but please accept with good grace that your agenda is not the same as my own. Most of us in the practitioner space are using languages, tools and OSes to solve customer problems, and making the decision to use a particular language, tool or OS a personal one generally gets us into trouble--how many developers do you know that identify themselves so closely with that decision that they include it in their personal metadata? "Hi, I'm Joe, and I'm a Java programmer." Or, "Oh, good God, you're running Windows? What are you, some kind of Micro$oft lover or something?" Or, "Linux? You really are a geek, aren't you? Recompiled your kernel lately (snicker, snicker)?" Sorry, but all of those make me want to hurl. Of these kinds of statements are technical zealotry and flame wars built. When programmers embed their choice so deeply into their psyche that it becomes the tagline by which they identify themselves, it becomes an "ego" thing instead of a "tool" thing. What's more, it involves customers and people outside the field in an argument that has nothing to do with them. Think about it for a second; the last time you hired a contractor to add a deck to your house, what's your reaction when they introduce themselves as, "Hi, I'm Kim, and I'm a Craftsman contractor." Or, overheard at the job site, "Oh, good God, you're using a Skil? What are you, some kind of nut or something?" Or, as you look at the tools on their belt, "Nokita? You really are a geek, aren't you? Rebuilt your tools from scratch lately (snicker, snicker)?" Do you, the customer, really care what kind of tools they use? Or do you care more for the quality of solution they build for you? It's hard to imagine how the discussion can even come up, it's so ludicrous. Try this one on, instead: "Hi, I'm Ted, and I'm a programmer." I use a variety of languages, tools, and OSes, and my choice of which to use are all geared around a single end goal: not to promote my own social or political agenda, but to make my customer happy . Sometimes that means using C# on Windows. Sometimes that means using Java Read More...
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