Secondly, I've never heard about a case where "using namespace std;" has really created more problems than it "solved". I guess I agree in principle, but in practice, it just makes life too fucking difficult, we have some real problems to solve as well, and can't constantly keep bickering with the everchanging C++ recommendations.
vector means one thing in math and 3d graphics, and another thing in standard C++.
I've recently run into (on a mailing list) a collision related to "dec". I'm not exactly sure, but I think both functions were used to format numerics for use in io. The old dec seems to have a different syntax.
Possibly, "using namespace std" is "dangerous" because it promotes laziness.
Many O'Reilly are good, but some seem slapped together. That imprint is not the end all of computer publishing.
For example,Addison Wesley publishes
OpenGL Programming Guide C++ Primer (Lippman/Lajoie) C++ (Stroustrup) The C++ Standard Library (Josutis) AOCP (Knuth) LateX (Lamport) LaTeX Companion (Goossens/Mittelbach/Samarin)
I'd say that both AW and O'Rielly have good editorial staffs-- but a book should be judged by its contents, not its imprint.
(On the other hand, certain imprints are acquiring a bad rep. Usually they are distinguished by loud, slogan strewn covers-- and a bias towards Windows. see, for instance, Donald Knuth's Big Dummies Guide to Visual Basic)
I found "C++ Primer" by Lippman and Lajoie to be far more readable than Stroustrup-- although I use both.
C++ textbooks are notorious for inculcating bad habits in beginning programmers. Of course, some of that stems from lack of exposure to the standard C++ libraries.
My biggest pet peeve: "using namespace std;" is not a magical incantation to be placed in every C++ file. Fine grain control of namespaces is something that C++ students should learn-- collisions are the cause of many a bug.
This can be helpful, although I've found that 90 copies of the same linux howto don't neccesarily answer my questions. Mailing list archives, though, are often extremely helpful.
People also tend to mirror the incomplete, and often not especially helpful Cocoa/NextStep documentation. I've found that even the (slapped together) book "Learning Cocoa" has more structure.
Old books are useful for debugging and porting old code-- newer books often (and with good reason) give short shrift to deprecated/nonstandard/obsolete functions.
Many years ago, I wanted to use a swiss ftp server to download something (Oberon, IIRC). My initial attempts to login with my email address were rebuffed with a statement that this server was intended for swiss residents. By appending.ch to my email address, however, I was able to secure entry.
think about the holy hell that would get raised if you decided to charge a fee of $2500 a year to drive to Manhattan Island!
Guess What? The Port Authority of New York And New Jersey charges, get this-- Tolls!. I know, I couldn't believe it either, but apparently, if you want to enter Manhattan, you'll have to pay a toll of $5. What the bridge trolls charge That's $1300 a year. BTW, at the current exchange rate of £1=1.56, £1300 is only worth $2024. Foreign Exchange Rates
The warranty is $950 for three years. The default is 90 days support/1 year hardware. I did not include such things in my back of the envelope calculations.
Also, note that the Dell 1650 that performed so poorly had lots of expensive options
2x 1.4 Ghz Pentium III 1 GB Ram Windows 2000 Server 3x36 GB Internal Raid (SCSI) Dell Perc 3/Di Disc Controller
4638 dollars... (with no fancy options selected such as monitoring, rack rails, etc. No operating system: add 799 if you really want Windows 2000). The XServe was configured with 2x 1GHz PowerPC G4 1 GB Ram 480 GB RAID (ATA drives, though) Total: 6049 dollars
I'm not going to play the "you get so much more with the apple" game, though. If you reduce the drive complement to 3x60GB drives, though. (I'm assuming that the 480 GB complement was overkill, and did not affect the benchmark score)
Total: 5099.
Without an OS, the Dell Machine still beats the XServe (in price) while barely losing in performance. Add Windows 2000, and the Dell becomes more expensive ($5437). Add sufficient client licenses to fully replicate the benchmark situation, and the price climbs ever higher.
To claim now, many years after the fact, that it's suddenly theft, is ludicrous.
The National Gallery of Art is funded and controlled by the US Governments. Suppose that the current president decided to reward the political loyalty of a peon (say, Karl Rove), by expropriating a minor, but still valuable work to give to him as a present. Suppose that Karl Rove subsequently kept that artwork for twenty-five years, and sold it in a financially shady deal to someone in Honduras. A subsequent US government, upon learning that a missing artwork had turned up on the market in Honduras, might very well want it back...
Furthermore, the rock, if stolen, should be returned. The United States can do a lot more with it (scientific research, etc) than some Honduras collector.
Actually, the US wants it returned to Honduras. The US government presented it as "a goodwill gift", but the moon rock was somehow misappropriated. Even if the then reigning dictator gave it to the "colonel" who sold it to Alan Rosen, that initial transfer was illicit-- since it belongs to the "Honduran people".
The fact that it was used as a diplomatic gift might be an indication of samples's lack of diplomatic value. Or it might be an indication of NASA's subordination of science to politics...
I'm not that familiar with Windows Media Player licenses, but the line about security upgrades might well be present in previous versions. It doesn't seem to be in the license for the mac client (7.3)
US New & World Report recently reported (17 June 2002) that the Secret Service used to show Porn movies in their break room at the White House during the night shift. They even posted a lookout to watch if a female agent was passing by.
And, of course, security camera operators may indulge certain voyeuristic pastimes.
The ASCI supercomputers simulate nuclear explosions because testing a real nuclear weapon are forbidden by the Comprehensive Test Ban Treaty. For various reasons, maintaining a nuclear stockpile requires a certain amount of testing-- either for safety or to ensure that such weapons actually work-- duds apparently reduce deterrent value. Thus the ASCI project.
If there was no nuclear stockpile to maintain, Los Alamos probably would not be host to the "world's fastest supercomputers." Not exactly a fair trade...
If you shine light through a crystal, it is diffracted in a specific manner that can be corollated with the internal structure of that crystal. Shining X-Rays through crystallized protein will similarly produce a diffraction pattern that can be used to determine the three dimensional structure of that protein.
A stereo video card is a system that can present different video images to the left and right eye of the user, producing an illusion of depth. I would imagine that this would be very helpful in visualizing three dimensional protein structure.
Specialization? What specialization? The Top500 rankings are based on LinPack-- a software package for solving dense systems of linear equations-- which seems applicable to a fairly general set of scientific problems.
Do supercomputing manufacturers cheat on benchmarks? I don't know. Presumably it would be a rather expensive proposition-- and since supercomputing sites will benchmark with a variety of specialized and general purpose libraries, it seems unlikely to work.
There, are, of course, differences between weather simulations and galactic evolution simulations. But field specific benchmarks are inappropriate for a site like Top500--the whole point of the site is to allow someone to analyse gross trends. "This memory architecture once dominated the rankings--now its used by only a few entries. Perhaps our next computer platform shouldn't be based on that architecture." (and possibly writing journal articles about it.)
In addition, general purpose supercomputing sites are relatively common.
Slashdot Mirror
Secondly, I've never heard about a case where "using namespace std;" has really created more problems than it "solved". I guess I agree in principle, but in practice, it just makes life too fucking difficult, we have some real problems to solve as well, and can't constantly keep bickering with the everchanging C++ recommendations.
vector means one thing in math and 3d graphics, and another thing in standard C++.
I've recently run into (on a mailing list) a collision related to "dec". I'm not exactly sure, but I think both functions were used to format numerics for use in io. The old dec seems to have a different syntax.
Possibly, "using namespace std" is "dangerous" because it promotes laziness.
Many O'Reilly are good, but some seem slapped together. That imprint is not the end all of computer publishing.
For example,Addison Wesley publishes
OpenGL Programming Guide
C++ Primer (Lippman/Lajoie)
C++ (Stroustrup)
The C++ Standard Library (Josutis)
AOCP (Knuth)
LateX (Lamport)
LaTeX Companion (Goossens/Mittelbach/Samarin)
I'd say that both AW and O'Rielly have good editorial staffs-- but a book should be judged by its contents, not its imprint.
(On the other hand, certain imprints are acquiring a bad rep. Usually they are distinguished by loud, slogan strewn covers-- and a bias towards Windows.
see, for instance, Donald Knuth's Big Dummies Guide to Visual Basic)
I found "C++ Primer" by Lippman and Lajoie to be far more readable than Stroustrup-- although I use both.
C++ textbooks are notorious for inculcating bad habits in beginning programmers. Of course, some of that stems from lack of exposure to the standard C++ libraries.
My biggest pet peeve: "using namespace std;" is not a magical incantation to be placed in every C++ file. Fine grain control of namespaces is something that C++ students should learn-- collisions are the cause of many a bug.
This can be helpful, although I've found that 90 copies of the same linux howto don't neccesarily answer my questions. Mailing list archives, though, are often extremely helpful.
People also tend to mirror the incomplete, and often not especially helpful Cocoa/NextStep documentation. I've found that even the (slapped together) book "Learning Cocoa" has more structure.
Old books are useful for debugging and porting old code-- newer books often (and with good reason) give short shrift to deprecated/nonstandard/obsolete functions.
Alas, if you want to see pictures of "fucking the Virgin Mary" (as a literal translation of porcomadonna might have it, you're out of luck
Many amateur astronomers dream of discovering a new comet-- something that is impossible with a computer astronomy simulator.
5. 177.45 cm3 crystalline C12H22O11
6. 177.45 cm3 unrefined C12H22O11
This is insufficiently precise. Which Disaccharide should I use?
I don't have any sucrose, guess I'll try lactose. Maltose might also work....
Many years ago, I wanted to use a swiss ftp server to download something (Oberon, IIRC). My initial attempts to login with my email address were rebuffed with a statement that this server was intended for swiss residents. By appending .ch to my email address, however, I was able to secure entry.
Guess What? The Port Authority of New York And New Jersey charges, get this-- Tolls!. I know, I couldn't believe it either, but apparently, if you want to enter Manhattan, you'll have to pay a toll of $5. What the bridge trolls charge That's $1300 a year. BTW, at the current exchange rate of £1=1.56, £1300 is only worth $2024. Foreign Exchange Rates
The xServe does not have a DVD recorder. It does not have CDR. It does not have external SCSI (although this could be added). Oops...
On the other hand, you could use a firewire tape drive, or a backup server.
The Men in Black work for the Immigration and Naturalization Service. (INS, Division 6, if I recall correctly).
3.12120...?? When did that happen?
3.14159265358979323846264....
This is also wrong
I'll spell it out for you...
Using the archaic base 0xA system, pi=3.14159265...
Using the new improved base (b=pi)-- pi=10, and 0xA=2.0090464.
It's saner to use base e. where 0xA is 2.30285.., pi=1.1461084... and there are 4.0943446 minutes in an hour.
In the bible, it is written that pi=30/10. Since God is infallible, it follows that humans must learn to use an irrational base where b=(pi/3)...
Together, we must learn to transcend the limitations of integer bases.
The warranty is $950 for three years. The default is 90 days support/1 year hardware. I did not include such things in my back of the envelope calculations.
Also, note that the Dell 1650 that performed so poorly had lots of expensive options
2x 1.4 Ghz Pentium III
1 GB Ram
Windows 2000 Server
3x36 GB Internal Raid (SCSI)
Dell Perc 3/Di Disc Controller
4638 dollars... (with no fancy options selected such as monitoring, rack rails, etc. No operating system: add 799 if you really want Windows 2000).
The XServe was configured with
2x 1GHz PowerPC G4
1 GB Ram
480 GB RAID (ATA drives, though)
Total: 6049 dollars
I'm not going to play the "you get so much more with the apple" game, though. If you reduce the drive complement to 3x60GB drives, though. (I'm assuming that the 480 GB complement was overkill, and did not affect the benchmark score)
Total: 5099.
Without an OS, the Dell Machine still beats the XServe (in price) while barely losing in performance. Add Windows 2000, and the Dell becomes more expensive ($5437). Add sufficient client licenses to fully replicate the benchmark situation, and the price climbs ever higher.
#!/usr/bin/perl -we reV301.cgi?new1=1&url_string1=sourceforge.net& amp;results_string1=MP3&category_request1=rm&a mp;url_request=Send+4 .5");
use LWP;
$url= "http://www.securecomputing.com/cgi-bin/filter_wh
Request";
$browser = LWP::UserAgent->new();
$browser->agent("Mozilla/
for($i=0; $i<500; $i++){
$webdoc = $browser->request(HTTP::Request->new(GET => $url));
if($webdoc->is_success){
print STDOUT $webdoc->title, "\n";
}else{
print STDERR "$0: couldn't fetch $url";
}
}
All subdomains of sourceforge.net are also being filtered, so fink, expat, etc... are all listed as "MP3".
So, a perl script might be needed to change all of these.
The National Gallery of Art is funded and controlled by the US Governments. Suppose that the current president decided to reward the political loyalty of a peon (say, Karl Rove), by expropriating a minor, but still valuable work to give to him as a present. Suppose that Karl Rove subsequently kept that artwork for twenty-five years, and sold it in a financially shady deal to someone in Honduras. A subsequent US government, upon learning that a missing artwork had turned up on the market in Honduras, might very well want it back...
Furthermore, the rock, if stolen, should be returned. The United States can do a lot more with it (scientific research, etc) than some Honduras collector.
Actually, the US wants it returned to Honduras. The US government presented it as "a goodwill gift", but the moon rock was somehow misappropriated. Even if the then reigning dictator gave it to the "colonel" who sold it to Alan Rosen, that initial transfer was illicit-- since it belongs to the "Honduran people".
The fact that it was used as a diplomatic gift might be an indication of samples's lack of diplomatic value. Or it might be an indication of NASA's subordination of science to politics...
I'm not that familiar with Windows Media Player licenses, but the line about security upgrades might well be present in previous versions. It doesn't seem to be in the license for the mac client (7.3)
I think it was Bush II. I don't remember the details, and don't wish to pay the USNR archive fee.
US New & World Report recently reported (17 June 2002) that the Secret Service used to show Porn movies in their break room at the White House during the night shift. They even posted a lookout to watch if a female agent was passing by.
And, of course, security camera operators may indulge certain voyeuristic pastimes.
The Register has a reply of sorts, including a link to its pioneering article on computer assisted cooking technologies
The ASCI supercomputers simulate nuclear explosions because testing a real nuclear weapon are forbidden by the Comprehensive Test Ban Treaty. For various reasons, maintaining a nuclear stockpile requires a certain amount of testing-- either for safety or to ensure that such weapons actually work-- duds apparently reduce deterrent value. Thus the ASCI project.
If there was no nuclear stockpile to maintain, Los Alamos probably would not be host to the "world's fastest supercomputers." Not exactly a fair trade...
If you shine light through a crystal, it is diffracted in a specific manner that can be corollated with the internal structure of that crystal. Shining X-Rays through crystallized protein will similarly produce a diffraction pattern that can be used to determine the three dimensional structure of that protein.
A stereo video card is a system that can present different video images to the left and right eye of the user, producing an illusion of depth. I would imagine that this would be very helpful in visualizing three dimensional protein structure.
Specialization? What specialization? The Top500 rankings are based on LinPack-- a software package for solving dense systems of linear equations-- which seems applicable to a fairly general set of scientific problems.
Do supercomputing manufacturers cheat on benchmarks? I don't know. Presumably it would be a rather expensive proposition-- and since supercomputing sites will benchmark with a variety of specialized and general purpose libraries, it seems unlikely to work.
There, are, of course, differences between weather simulations and galactic evolution simulations. But field specific benchmarks are inappropriate for a site like Top500--the whole point of the site is to allow someone to analyse gross trends. "This memory architecture once dominated the rankings--now its used by only a few entries. Perhaps our next computer platform shouldn't be based on that architecture." (and possibly writing journal articles about it.)
In addition, general purpose supercomputing sites are relatively common.