Thursday, October 16, 2008
With every year that goes by, I of course get older. But I tend to feel older in bursts that are further than a year apart. Like when I first had a student in a class of mine who was born after 1977, which is the year I started university. Or when someone asked me where to get that special .NET utility "xcopy" so they could take advantage of "xcopy deployment". (Hint: it came in very very early versions of DOS. Pre Windows.)
But it turns out some technologies are not only older than when I started in this business, they're actually older than when I was born. Video games are 50, and I am not.
The circular inset shows an oscilloscope that was hacked up to let people play "tennis". But not like Pong, from above - this was from the side. From the CBC article:
Several weeks before the annual visitors' day in 1958, Higinbotham decided to liven things up. While reading through the instruction manual for one of the lab's analog computers, he found a description of how the machine could calculate ballistic missile trajectories.
With some minor programming modifications, he discovered that he could turn the ballistics demonstration into a manually-controlled game resembling tennis. Higinbotham had Dvorak hook up the computer to an oscilloscope, a five-inch screen used to display electric voltages, and add a pair of box-shaped controllers, each with a knob and a button.
The resultant game resembled a tennis court, as seen from the side. A horizontal line represented the court while a short vertical line in the middle was the net. Players could control the ball's direction and speed with the knob on the controller and hit it with the button.
"Tennis for Two," as it was dubbed, was a simple reworking of the analog computer's basic functions. To Higinbotham, it was no big deal.
"He didn't think there was anything new in there because he just used the circuits that were explained in the manual that came with the computer," says Peter Takacs, a physicist currently working in Brookhaven's instrumentation division. "He just took those circuits and figured out how to wire them together that would allow two people to hit a ball back and forth across the net. He didn't really think that was such an innovative thing."
Dvorak Jr. says the whole point of the game was to simply show off the capabilities of the hot new technology of the day.
"The whole idea was to show the public what a computer was, what it could do," he says. "From the perspective of society, he had no idea what he was doing."
Wednesday, October 15, 2008
Normally I read Joe Duffy's blog for the concurrency goodness. But like most people, he has opinions that range quite a bit broader. His take on "what is an architect?" is really interesting reading. It's several pages long: here are the subheads:
0. Inspire and empower people to do their best work.
1. Oversight, but not dictatorship.
2. Taste is a hard thing to measure, but is invaluable.
3. Write code and get your hands dirty.
4. The power of the dyad: know your weaknesses.
5. It's for the customer, not you.
6. Admit when you're wrong, fall on your sword, and then fix it.
Joe concludes "Being an architect, in the end, is all about helping others to succeed. If you’re a really good architect, you’ll inspire people and rub off on them. You’ll gain a certain level of respect that is unmistakable and priceless. And that, in my opinion, is far more fulfilling than anything you could accomplish on your own working in a vacuum."
You may agree or disagree about whether these leadership skills are architect skills but I find this a great summary of what I'm trying to be in my firm and how I want to relate to my developers, testers, designers, and so on. Take the time to read it through.
Tuesday, October 14, 2008
Do you recognize this man?
Maybe that's too recent a picture... try this one:
Combine these tickets with the PDC location and I have an earworm that should be with me till the end of the month.
Monday, October 13, 2008
Believe it or not, this code (snipped from something larger) compiles:
unsigned int c = ( o-----o
assert( c == (I-----I) * (I-------I) );
assert( ( o-------------o
| L \
| L \
| ! !
! ! !
o | !
L | !
L | !
o-------------o ).volume == ( o-------------o
o-------------o ).area * int(I-------------I) );
Not only does it compile, the asserts succeed. What's more, o is not some instance of a class, and neither is I. As you might imagine, there's some bizarro stuff behind this. Templates, operator overloads, ... it's all reasonably silly and impressive at the same time. Needless to say, the ! and -- operators do not "do as the ints do" in this case.
The files you need are at http://www.xs4all.nl/~weegen/eelis/tutorial.cpp and http://www.xs4all.nl/~weegen/eelis/analogliterals.hpp. There's an explanation of sorts at http://www.xs4all.nl/~weegen/eelis/analogliterals.xhtml but my IE7 refused to load it, so I saved it on my machine and renamed .xhtml to .html. To test the code I used VS 2008, made a Win32 console app and just pasted the body of Eelis' main into my generated main, and the body of the header into an empty header file. No strange settings required and no warnings on compile.
Try it yourself!
Sunday, October 12, 2008
I just love the Vista Bridge. I've spoken about it at Tech Ed, on Geekspeek, on DotNetRocks, and pretty much anywhere that will have me (and I have more planned.) Now the Windows SDK team is blogging about it. Yay! They include where to download it, how to make sure you get it when you install the SDK, and some workarounds for some bugs in the samples.
Stay tuned for more Vista Bridge info...
Saturday, October 11, 2008
Headed to the PDC this month? Is it your first? Or did you go once before but ended up feeling you somehow wasted the opportunity? A huge part of conferences is the face time. The really popular sessions will be blogged (so go to sessions on more obscure topics), there will be other ways to get some of the information (not all, so choose wisely), but no screencast can compare to chatting to people who know things you need to know, to making friends, and to seeing some of your heroes as actual human beings and learning what beer they prefer. Thomas Lewis has an intruiging Guide to the PDC that covers slightly different ground than the usual guides. An intruiging combination of how to learn the most and how to get free drinks as well.
Alas I am not staying at the Westin, but the Marriot. The good news is I have an invitation to a party at the Standard .
See you there!
Friday, October 10, 2008
Well, I already knew I was an outlier. And I knew that my number of open windows was part of that eccentricity. But just how much? According to the Engineering Windows 7 blog entry on the taskbar, pretty much everyone peaks at less than 15 open windows, and most people at less than 10:
Here's my taskbar at a typical moment:
It's routinely three high. I've never gone to four high, but I have had more open than that. 40 doesn't seem unusual to me (that's 42 there) and I can find my way around in them easily enough. I am a big-time Alt-tabber of course.
Curious how the taskbar, launch pane, start menu, and so on will be different in Windows 7? Want to understand why some features are the way they are (hint: customers are all different, except in the ways they are the same)? Read the blog!
Thursday, October 09, 2008
The Engineering 7 blog is really something. These guys are sharing a TON of information about how they decide what will and won't be in the next version of Windows, how it will work, how they will know they're done, and so on. I enjoyed this summary of UAC issues - what they learned from Vista and what they intend to do in Windows 7. Interesting points:
- Intuitively we all know the number of UAC prompts you see should go down over time, because once you have things installed and configured, you don't run the admin apps any more. But they also go down because you used to run old versions of apps that weren't UAC-aware (think Visual Studio 2005 and having to run it elevated most of the time, especially for ASP.NET work) but later you install a newer version that is aware and doesn't have to run elevated (Hello, Visual Studio 2008!)
- The number of different applications that cause UAC prompts "in the wild" is down to about one-fifth of what it was when Vista first released. That's a great success for persuading software vendors to get new versions UAC-aware.
- They plan to add information to the dialogs in Windows 7 so you will understand more clearly what you are being asked to approve.
Can't wait to get to the PDC and learn even more about what Windows 7 will have in store for us!
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