I've had mythtv installed for a week now, and love it. The best feature is that even though I haven't been on my computer for 2 weeks, but use the web interface to scan for tv shows and mark them to record. It automatically records futurama and simpsons daily for me. I then reencode them as mpeg4, scp them to the machine I'm currently on, and watch them from there:)
Thanks - that would be useful info if it had any relevance at all to my message:P I'm talking about at write-time, not run time. I'm talking about ranges a value can be in all possible executions, not one particular execution.
int x; int myarray[5];//then initialise myarray.. scanf("%d", &x); myarray[x]++;
So you ask the user to type in a number. The value of x after the scanf statement is [MININT - MAXINT]. But the legal range of myarray is [0-5]. So compare ranges, detect there is a value outside the range, and error.
Threading will be really hard to do right, but will offer the greatest advantages (since threading is really hard to debug conventionally)
I'm just finishing uni and want to spend a lot of time on this sort of problem.
I feel that the solution is not run-time debugging, but write-time debugging - why can't my _editor_ at least try to spot race conditions, buffer overflows, etc.
This is actually one of the reasons I like the pair-based programming style set out in XP. Admittedly it is not really supposed to be for this sort of thing, but it is a really nice benefit
How about instead of not using any debugging tools, you debug at write time?
For a lot of code, the compilier should be able to work out the pre and post conditions of a function, and then just check that when you call that function you don't violate them.
Also I'd like to be able to hover my mouse over a variable and see what range of values it could have. From here you can check that you never go outside the bounds of a variable, and so on.
Obviously you can never get it to work on all cases due to the halting problem, but it will work with a lot of code - and on confusing code you can manually add the special comments for the post and pre conditions - a good idea anyway for complex code.
Agreed. I worked during the summer just before going to university, just before the dotcom collapse (only 2 years ago - jeez). I was earning $1k a week, after taxes, and the money just went to my head, and I managed to spend it all within the first few months of being at uni. (Well, I've still got all my computers, so I'm not complaining.) But still 2 years on, on a student budget. I tend to be overspending (heh, who doesn't), and that was from only a 3 month long job.
Hell just use a pc104 stack - the one's we had at work were pentium III's - over 1ghz. They are only about 3"x3" (they stack on top of each other depending on what you want - for example we would put a pcmcia wireless card on the top stack, video card underneath that, and so on.)
You also have to specialise somewhat. You only have a very small number of people actually working on the graphics engine. A small number on the AI, and so on. Personally I'm working on generic communication.
heh tell me about it. I got into Manchester on a four year course (Meng) on a requirement on 28 points (AAB) (I got 38 points - AAAB). When I got there, at least 3/4 of the ppl had never touched a computer, and I met one guy who got in on 14 points! The first couple of years were so easy to be boring - although I did enjoy and learn more than I thought I would (AI, prolog, etc). By the time I got to my third year I realised that the Meng course simply meant that I had to do accounting and law and business and wasn't allowed to any of the masters courses. So I've dropped it and now aiming for MSc where I can just stick to the courses I enjoy, and I can get funding if I get >=75%.
Hmm, I should be revising for my exams, not posting on/.
I believe it is phrased to cover anything that picks up tv signals. (granny's dentures etc...:) You can buy tv's that have been modified (or built) to just be usable for vhs or whatever, and not tv, and so you don't need a license for them (But I've never seen them around - just heard they exist.) You have to pay the license on a per household basis. In my halls of residence we have 8 people to a house. If we wanted to put a tv anywhere in our small house we would have to pay 9*120 (+1 for in-nobody's-room e.g. the living room) I can't remember if it is £105 or £120.
Actually the van doesn't contain anything - the dectector bit is just hand held. Ya see, the tv signals are kinda weak and so are overlayed on this big strong high frequency signal. (tv+Strong signal). So in the tv all it does is generate another strong signal(different frequency for different channels) and overlay that on top of the incomming signal with a phase difference of 90. (tv+Strong-Strong = tv!). The detectors just simply try to pick up what the strong signal from the tv.(Which btw means they also know what channel you are watching).
The would have to release their own software which wouldn't let you fast forward during the adverts.
I really really hate watching dvd's in windows where it forces me to wait ages for that fbi warning. For me (and most ppl) I only see the fbi warning if I have the original dvd, and don't get harrassed by it if I have a ripped vcd or mpeg of it.
Hmm indeed. Say, like the other poster said, that you blink at 10x what I said, so 70km/h. Now say the eyelid weighs only a few grams - say 0.01kg. ( I have no idea really, but those eye lashes seems quite heavy.) Say that we move them at a constant acceleration for 1/2cm, then constant deacceleration (seems a fair enough model.) We need the other to go from fully open to fully closed in 1cm/70kmph =.0005secs. At the middle of the eye we will need a speed of 140kmph (to average our 70kmph) and need to do so in 0.00025secs. This requires an acceleration of 140kmph/0.00025sec = 155555m/s^2. This would require a force of f=ma = 0.01*155555 = 1555N. We require that force again to slow down, and then we have to open the eye again. (I'm assuming things like gravity cancel out etc). So a total force of 1555*4N = 6220N. This is over a period of 0.001secs, so a total of 6220*0.001 = 6.2Watts are used. Say it is 90% efficent (muscles aren't perfect convertor, there will be friction despite the eye being very well lubricated,etc) so you will get 0.62W in waste heat. That's not that much heat, although you would probably need to blink a lot more, since the blinking wouldn't be as effective. Since a blink takes about (guessing) 1/2 sec, let's say you would need to do 0.5/0.001 blinks = 500 blinks. Say you blink every 10 secs (I have no idea really), that would be 50 of these quick-blinks per second, so now our output heat is 50*0.62 = 31W - which would sting like a bitch:)
I've just played about for a minute and already found some really cool uses. I can modify my scripts that play music to do so in another session inside a konsole, and rename sessions:
You could put two pc's next to each other and just use the same desktop (vnc or whatever).
Also another very very cool thing is if you use emacs you can open the same window on another machine. Then you can see each others changes in realtime, and both modify the file at the same time. What is even cooler is that you can view and edit different parts of the same file. This has the advantage of say vnc because one could be coding while the other fixes spelling mistakes, adds comments, and does the higher level thinking. (I tend to associate the commenting and higher level thinking together - correct me if I'm wrong)
Say it is 100fps, so each frame takes 0.01 seconds. In that time your eyelid has to travel 2cm's say (1cm down, 1cm up again). s=d/t = 0.02/0.01 = 2m/sec = 2*60*60/1000 = 7.2 km/h.
Hate to be dumb, and I don't quite remember the wavelength of the particular wavelengths that cause the electromagnetic interference, but given that visible light is under 1000nm = thousandth of a milimeter it would require a very thin mesh to block visible light. This is of course just for visible light, but are the frequencies that need sheilding too far off?
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I've had mythtv installed for a week now, and love it. The best feature is that even though I haven't been on my computer for 2 weeks, but use the web interface to scan for tv shows and mark them to record. It automatically records futurama and simpsons daily for me. I then reencode them as mpeg4, scp them to the machine I'm currently on, and watch them from there :)
Thanks - that would be useful info if it had any relevance at all to my message :P I'm talking about at write-time, not run time. I'm talking about ranges a value can be in all possible executions, not one particular execution.
not at all. Take a really simple example:
//then initialise myarray..
int x;
int myarray[5];
scanf("%d", &x);
myarray[x]++;
So you ask the user to type in a number. The value of x after the scanf statement is [MININT - MAXINT]. But the legal range of myarray is [0-5]. So compare ranges, detect there is a value outside the range, and error.
Threading will be really hard to do right, but will offer the greatest advantages (since threading is really hard to debug conventionally)
I'm just finishing uni and want to spend a lot of time on this sort of problem.
I feel that the solution is not run-time debugging, but write-time debugging - why can't my _editor_ at least try to spot race conditions, buffer overflows, etc.
Leecho, I want to buy your frog.
This is actually one of the reasons I like the pair-based programming style set out in XP. Admittedly it is not really supposed to be for this sort of thing, but it is a really nice benefit
How about instead of not using any debugging tools, you debug at write time?
For a lot of code, the compilier should be able to work out the pre and post conditions of a function, and then just check that when you call that function you don't violate them.
Also I'd like to be able to hover my mouse over a variable and see what range of values it could have. From here you can check that you never go outside the bounds of a variable, and so on.
Obviously you can never get it to work on all cases due to the halting problem, but it will work with a lot of code - and on confusing code you can manually add the special comments for the post and pre conditions - a good idea anyway for complex code.
er no, MS have the private key and the xbox has the public key.
In the way you are suggesting there would be no problem because anyone could sign anything with the public key.
Agreed. I worked during the summer just before going to university, just before the dotcom collapse (only 2 years ago - jeez). I was earning $1k a week, after taxes, and the money just went to my head, and I managed to spend it all within the first few months of being at uni. (Well, I've still got all my computers, so I'm not complaining.) But still 2 years on, on a student budget. I tend to be overspending (heh, who doesn't), and that was from only a 3 month long job.
It's 64 processors with linux and 1024 with irix - so you are both right.
(I wonder, however, if linux managed to support more processors whether this would just work with more processors (on a single image etc etc))
Hell just use a pc104 stack - the one's we had at work were pentium III's - over 1ghz. They are only about 3"x3" (they stack on top of each other depending on what you want - for example we would put a pcmcia wireless card on the top stack, video card underneath that, and so on.)
You also have to specialise somewhat. You only have a very small number of people actually working on the graphics engine. A small number on the AI, and so on. Personally I'm working on generic communication.
heh tell me about it. I got into Manchester on a four year course (Meng) on a requirement on 28 points (AAB) (I got 38 points - AAAB).
/.
When I got there, at least 3/4 of the ppl had never touched a computer, and I met one guy who got in on 14 points!
The first couple of years were so easy to be boring - although I did enjoy and learn more than I thought I would (AI, prolog, etc). By the time I got to my third year I realised that the Meng course simply meant that I had to do accounting and law and business and wasn't allowed to any of the masters courses.
So I've dropped it and now aiming for MSc where I can just stick to the courses I enjoy, and I can get funding if I get >=75%.
Hmm, I should be revising for my exams, not posting on
I believe it is phrased to cover anything that picks up tv signals. (granny's dentures etc... :)
You can buy tv's that have been modified (or built) to just be usable for vhs or whatever, and not tv, and so you don't need a license for them (But I've never seen them around - just heard they exist.)
You have to pay the license on a per household basis. In my halls of residence we have 8 people to a house. If we wanted to put a tv anywhere in our small house we would have to pay 9*120 (+1 for in-nobody's-room e.g. the living room)
I can't remember if it is £105 or £120.
It would be a dream if gtk/gnome supported dcop and was compatible with kde, but by the sound of it that isn't easily possible at the moment.
Actually the van doesn't contain anything - the dectector bit is just hand held. Ya see, the tv signals are kinda weak and so are overlayed on this big strong high frequency signal. (tv+Strong signal). So in the tv all it does is generate another strong signal(different frequency for different channels) and overlay that on top of the incomming signal with a phase difference of 90. (tv+Strong-Strong = tv!).
The detectors just simply try to pick up what the strong signal from the tv.(Which btw means they also know what channel you are watching).
The would have to release their own software which wouldn't let you fast forward during the adverts.
I really really hate watching dvd's in windows where it forces me to wait ages for that fbi warning. For me (and most ppl) I only see the fbi warning if I have the original dvd, and don't get harrassed by it if I have a ripped vcd or mpeg of it.
Hmm indeed. Say, like the other poster said, that you blink at 10x what I said, so 70km/h. .0005secs. At the middle of the eye we will need a speed of 140kmph (to average our 70kmph) and need to do so in 0.00025secs. This requires an acceleration of 140kmph/0.00025sec = 155555m/s^2. This would require a force of f=ma = 0.01*155555 = 1555N. :)
Now say the eyelid weighs only a few grams - say 0.01kg. ( I have no idea really, but those eye lashes seems quite heavy.) Say that we move them at a constant acceleration for 1/2cm, then constant deacceleration (seems a fair enough model.) We need the other to go from fully open to fully closed in 1cm/70kmph =
We require that force again to slow down, and then we have to open the eye again. (I'm assuming things like gravity cancel out etc).
So a total force of 1555*4N = 6220N. This is over a period of 0.001secs, so a total of 6220*0.001 = 6.2Watts are used. Say it is 90% efficent (muscles aren't perfect convertor, there will be friction despite the eye being very well lubricated,etc) so you will get 0.62W in waste heat.
That's not that much heat, although you would probably need to blink a lot more, since the blinking wouldn't be as effective. Since a blink takes about (guessing) 1/2 sec, let's say you would need to do 0.5/0.001 blinks = 500 blinks. Say you blink every 10 secs (I have no idea really), that would be 50 of these quick-blinks per second, so now our output heat is 50*0.62 = 31W - which would sting like a bitch
I've just played about for a minute and already found some really cool uses. I can modify my scripts that play music to do so in another session inside a konsole, and rename sessions:
dcop konsole-875 session-2 renameSession Hello
Or fancier,
dcop konsole-875 $(dcop konsole-875 konsole newSession) renameSession "Music"
hmm, not sure how you would then get a command to run in that session, but it's cool either way.
Very interesting. Do you know if things like mozilla (i.e. non-kde programs) have any intention of support dcop? What does gnome do?
You could put two pc's next to each other and just use the same desktop (vnc or whatever).
Also another very very cool thing is if you use emacs you can open the same window on another machine. Then you can see each others changes in realtime, and both modify the file at the same time. What is even cooler is that you can view and edit different parts of the same file. This has the advantage of say vnc because one could be coding while the other fixes spelling mistakes, adds comments, and does the higher level thinking. (I tend to associate the commenting and higher level thinking together - correct me if I'm wrong)
The page you linked to says that AMD _have_ lost the CPU war. (Although it took my an hour to read it all heh)
Say it is 100fps, so each frame takes 0.01 seconds. In that time your eyelid has to travel 2cm's say (1cm down, 1cm up again). s=d/t = 0.02/0.01 = 2m/sec = 2*60*60/1000 = 7.2 km/h.
Hate to be dumb, and I don't quite remember the wavelength of the particular wavelengths that cause the electromagnetic interference, but given that visible light is under 1000nm = thousandth of a milimeter it would require a very thin mesh to block visible light. This is of course just for visible light, but are the frequencies that need sheilding too far off?
At last, a female that just can't say no - only yes.