No, once a Perl programmer notices a design pattern they codify the whole process into a CPAN module.:)
Actually, design patterns are the kind of thing you think about on large projects with groups of coders, design documents, and managers, not on smaller text parsing scripts.
I thought the point was that most of the time we don't care if it is an int or a float, we just want it to work correctly. Obviously if you try to do something like (note, the . operator concatenates strings):
$foo = "bar";
$foo++;
Perl is still going to stop you, but when you do:
$foo = 123;
$bar = "Foo is $foo";
Perl does the right thing and automatically stringifies the number for you. You don't have to worry about converting your numbers to strings and back. You can even do things like:
$foo = 123;
$foo = $foo . "456";
$foo++;
print "$foo\n";
Perl will print out 123457, just like you'd expect. When you do stuff like that in a strongly typed language, you spend a whole lot of time converting types manually, which is annoying.
I picked up some NiMH (Rayovac's in case you care) batteries a couple of years ago and I've never gone back. I use them in my digital camera (where I get about 300 full res (1760x1168) pictures out of the 4AAs. I use them in my Palm VIIx (a battery hog in the best of days) where they easily last as long as the Alkalines (there's even a feature in PalmOS to switch the battery meter over to NiMH). Even when you consider the inital cost ($12 for 4 AAs), they quickly pay for themselves (I've taken ~3000 pictures on the 8 AAs I bought for the camera and recharged the palm batteries more times than I can count) with only half a dozen recharges.
One thing to be careful of is that the batteries do lose a bit of life over time, although my original sets seem to be holding up quite well. Also, rechargeable in general seem to leak charge faster than Alkalines, so they're not really a wonderful idea for long life low draw devices like remote controls.
Don't bother with NiCad. They have sucked from Day 1. I've never tried the rechargeable Alkalines. When you buy a charger, make sure you get one that supports NiMH, not all of them do.
Why should I pay the extra $200/month for a business class service to make sending pictures to my Mom more convienent? That's the wrong mentality, that's the "anybody running a service must be trying to make money off of it" service. It's the one the ISPs have, but it's just not accurate.
I hope you all enjoy those free dynamic DNS update services, they don't tend to last too long in my experiance (went though three before giving up on it).
umm, what, you can't accept incoming calls on your cell phone w/out an ip address? or are you for some god awful reason actually suggesting you want to use VOIP for a cell phone, even though the network is already designed for voice?
Maybe he has seperate "data" and "voice" minutes, and he wants to get the most voice time as possible out of both.
Does anybody work in one of those overseas ISPs that have switched to IPv6? I'd like to hear some actual accounts from the trenches on this one. It could be as the above poster implied, or it could be relatively painless and automatic save for some of your older users who still have Win3.0 on their 386 and wonder why their 9600 baud modem connection isn't working anymore...
Don't worry, I'm sure ISPs will still find a way to charge you an additional $15 (It's more expensive because 6 is bigger than 4) for each additional IP address you use.
Having a static public IP can be extremely handy though. Whenever I have a cool graphic or whatnot I want my friends to see, I just stick it up on the webserver and send the email in a link. Because many of my friends use pine or AOL or Hotmail or whatnot, that's the most reliable way of distributing the file. Even my Mom likes getting a link and being able to click on it rather than saving the file off somewhere and trying to open it later. And that's only one of the many many useful things you can do once you have a server and a static IPs, especially once you learn CGI and the power of perl.:) It's really a shame that so many ISPs are terrified of people running private little servers for personal use.
Oh man, C:\Program Files\ is the bane of my existance sometimes. Have you ever had to write a bunch of batch files to do things in a post 95 Windows? Have you ever been driven insane by the way applications define their own quoting rules (if any), and because M$ threw spaces in all of the important directory names, you have to learn _all_ of them. This problem extends beyond batch files, even drag on drop stuff has problems if you don't get the quotes just right on the.pif file. Even when you get it working for some applications, there are always a few (Snort IDS for instance) that seem to screw it up anyway. Before Win95, this wasn't a problem because nobody put spaces in the names, but now everything is a mess. I'm still convinced that M$ did that to aggrivate the command line users into using the gui.
I'm trying to, but every time I do, the RIAA or MPAA or SCO or somebody goes and does something irrational, and apparently they get away with it. How am I supposed to apply logic to an insane world?
The problem is battery life. The larger the internal memory is the more power it takes to run the chip. More power == less battery life. Flash cards are nice in this regard in that they require no power to maintain state (unlike the DRAM used inside the Palm), but they have very power intensive write operations. Besides, 32MB is quite a bit for a Palm device, if you need more (stored dictionaries or multi-volume ebooks), use the expansion slot.
Yeah, those AAAA batteries are pretty hard to find. I had no trouble getting AAA NiMH batteries though. Target, K-Mart, Wal-Mart, Best Buy, CompUSA, and Circut City are the places that I know carry them around here. I'm sure there are others. Rayovac makes some nice ones . I'd dump the NiCads though, they have sucked since day 1.
Those drop boxes don't work. It's a lottery to see if your question gets answered and by the time the teacher reads it and responds, you are already way beyond that part in the lesson.
One thing that is important to remember is that most knowledge builds off of preexisting knowledge. If you fail to understand something early in the lesson, you could end up missing large amounts of material as the lesson progresses. That is why it is so bad when the student has to go back to the teacher afterwords to get a clarification on something taught earlier in the day. By the time they get the help they need, they're going to redo half of the lesson to catch up. Most professors and TAs don't have enough time to reteach entire lessons to the dozen students who didn't get it the first time.
The usual solution is for the student to ask the teacher to stop and clarify, but that is a tremendous time sink for someone who only has three hours a week to impart his knowledge. Once a class size becomes large enough, this solution becomes completely unworkable, and some students are left out in the cold. If used in moderation, these backchannels would be a great boon to most classes. IMHO
Although you don't have to visit there, make sure you give the people at Head-Smashed-In Buffalo Jump a call while you're going through Alberta. The area is neat in a National Park kinda way, but it's great to have someone answer the phone with "Head smashed in, how may I help you?".
Plus you might learn something new about Native Americans.
The jist of the article is that if you give google a one (common) word search term, that the results may not be as precise as you want. For instance, if you want the nutritional content of an apple, and you put "apple" into Google, you're going to get a bunch of hits for things that don't have what you're looking for.
Er, most computer rooms don't have direct access to the outside (no windows, no outside doors). Usually they're buried in the middle of the building past a couple layers of security.
I'd nix that Dry ice idea. Most server rooms don't have paricularly good ventilation despite the large amounts of A/C in use (it's mostly recirculated air). Releasing large amounts of CO2 into the room might just turn your server room into a silent deathtrap.
I think it's the kind of people those discount retailers attract. Have you been to your local Wal*Mart and noticed the White Trash Factor? Plus these guys probably feel safer at Wal*Mart because they blend in with the crowd much better than they would at say Lord and Taylor.
The local Harris Teeter has those self checkout things. It's basically one aisle that has 4 self checkout counters and one "supervisor". It's great if you only have a few items because people don't seem to like them a lot, so there's almost always at least one open. The downside is that the mechanism is a bit slow (you have to place whatever item you just scanned into the bag before scanning the next item, which is somewhat inefficent). If you buy alcohol the machine stops and you have to go up to the cashier to show them your ID. Coupons work fine (just scan them in), produce is done the same way the cashiers do it, you punch in the four digit code on the sticker (or look it up if the sticker is missing), and either weigh it on the scanner or just punch in the quantity. When you're done you can either scan a credit/debit card, or walk up to the supervisor to pay cash/check. If you use a credit card you have to walk up to the supervisor to sign the recipt, but with a debit card you don't even have to do that.
The system works great, and it means I can checkout in 5 minutes almost every time. It's far faster than the "express" lane 90% of the time. The only time I go to the cashiers is when I've got a lot of groceries.
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The best part is that the second result actually sounds like a Russian Proverb.
No, once a Perl programmer notices a design pattern they codify the whole process into a CPAN module. :)
Actually, design patterns are the kind of thing you think about on large projects with groups of coders, design documents, and managers, not on smaller text parsing scripts.
I thought the point was that most of the time we don't care if it is an int or a float, we just want it to work correctly. Obviously if you try to do something like (note, the . operator concatenates strings):
$foo = "bar";
$foo++;
Perl is still going to stop you, but when you do:
$foo = 123;
$bar = "Foo is $foo";
Perl does the right thing and automatically stringifies the number for you. You don't have to worry about converting your numbers to strings and back. You can even do things like:
$foo = 123;
$foo = $foo . "456";
$foo++;
print "$foo\n";
Perl will print out 123457, just like you'd expect. When you do stuff like that in a strongly typed language, you spend a whole lot of time converting types manually, which is annoying.
I picked up some NiMH (Rayovac's in case you care) batteries a couple of years ago and I've never gone back. I use them in my digital camera (where I get about 300 full res (1760x1168) pictures out of the 4AAs. I use them in my Palm VIIx (a battery hog in the best of days) where they easily last as long as the Alkalines (there's even a feature in PalmOS to switch the battery meter over to NiMH). Even when you consider the inital cost ($12 for 4 AAs), they quickly pay for themselves (I've taken ~3000 pictures on the 8 AAs I bought for the camera and recharged the palm batteries more times than I can count) with only half a dozen recharges.
One thing to be careful of is that the batteries do lose a bit of life over time, although my original sets seem to be holding up quite well. Also, rechargeable in general seem to leak charge faster than Alkalines, so they're not really a wonderful idea for long life low draw devices like remote controls.
Don't bother with NiCad. They have sucked from Day 1. I've never tried the rechargeable Alkalines. When you buy a charger, make sure you get one that supports NiMH, not all of them do.
Mmm mmmm, just hand me over one of those big frosty glasses of eyestrain.
Isn't saying "Virtual Boy" in the present tense a little misleading?
Why should I pay the extra $200/month for a business class service to make sending pictures to my Mom more convienent? That's the wrong mentality, that's the "anybody running a service must be trying to make money off of it" service. It's the one the ISPs have, but it's just not accurate.
I hope you all enjoy those free dynamic DNS update services, they don't tend to last too long in my experiance (went though three before giving up on it).
Does anybody work in one of those overseas ISPs that have switched to IPv6? I'd like to hear some actual accounts from the trenches on this one. It could be as the above poster implied, or it could be relatively painless and automatic save for some of your older users who still have Win3.0 on their 386 and wonder why their 9600 baud modem connection isn't working anymore...
Don't worry, I'm sure ISPs will still find a way to charge you an additional $15 (It's more expensive because 6 is bigger than 4) for each additional IP address you use.
:) It's really a shame that so many ISPs are terrified of people running private little servers for personal use.
Having a static public IP can be extremely handy though. Whenever I have a cool graphic or whatnot I want my friends to see, I just stick it up on the webserver and send the email in a link. Because many of my friends use pine or AOL or Hotmail or whatnot, that's the most reliable way of distributing the file. Even my Mom likes getting a link and being able to click on it rather than saving the file off somewhere and trying to open it later. And that's only one of the many many useful things you can do once you have a server and a static IPs, especially once you learn CGI and the power of perl.
Oh man, C:\Program Files\ is the bane of my existance sometimes. Have you ever had to write a bunch of batch files to do things in a post 95 Windows? Have you ever been driven insane by the way applications define their own quoting rules (if any), and because M$ threw spaces in all of the important directory names, you have to learn _all_ of them. This problem extends beyond batch files, even drag on drop stuff has problems if you don't get the quotes just right on the .pif file. Even when you get it working for some applications, there are always a few (Snort IDS for instance) that seem to screw it up anyway. Before Win95, this wasn't a problem because nobody put spaces in the names, but now everything is a mess. I'm still convinced that M$ did that to aggrivate the command line users into using the gui.
What difference does that make?
That's fine if you think everybody else missed it as well, but what if it was just you who missed it? What do you do then?
I'm trying to, but every time I do, the RIAA or MPAA or SCO or somebody goes and does something irrational, and apparently they get away with it. How am I supposed to apply logic to an insane world?
The problem is battery life. The larger the internal memory is the more power it takes to run the chip. More power == less battery life. Flash cards are nice in this regard in that they require no power to maintain state (unlike the DRAM used inside the Palm), but they have very power intensive write operations. Besides, 32MB is quite a bit for a Palm device, if you need more (stored dictionaries or multi-volume ebooks), use the expansion slot.
Yeah, those AAAA batteries are pretty hard to find. I had no trouble getting AAA NiMH batteries though. Target, K-Mart, Wal-Mart, Best Buy, CompUSA, and Circut City are the places that I know carry them around here. I'm sure there are others. Rayovac makes some nice ones . I'd dump the NiCads though, they have sucked since day 1.
Those drop boxes don't work. It's a lottery to see if your question gets answered and by the time the teacher reads it and responds, you are already way beyond that part in the lesson.
One thing that is important to remember is that most knowledge builds off of preexisting knowledge. If you fail to understand something early in the lesson, you could end up missing large amounts of material as the lesson progresses. That is why it is so bad when the student has to go back to the teacher afterwords to get a clarification on something taught earlier in the day. By the time they get the help they need, they're going to redo half of the lesson to catch up. Most professors and TAs don't have enough time to reteach entire lessons to the dozen students who didn't get it the first time.
The usual solution is for the student to ask the teacher to stop and clarify, but that is a tremendous time sink for someone who only has three hours a week to impart his knowledge. Once a class size becomes large enough, this solution becomes completely unworkable, and some students are left out in the cold. If used in moderation, these backchannels would be a great boon to most classes. IMHO
Although you don't have to visit there, make sure you give the people at Head-Smashed-In Buffalo Jump a call while you're going through Alberta. The area is neat in a National Park kinda way, but it's great to have someone answer the phone with "Head smashed in, how may I help you?".
Plus you might learn something new about Native Americans.
You will never know because only your ass is smart.
Did you try: dishname -restaurant?
Those are some pretty weak allegations.
The jist of the article is that if you give google a one (common) word search term, that the results may not be as precise as you want. For instance, if you want the nutritional content of an apple, and you put "apple" into Google, you're going to get a bunch of hits for things that don't have what you're looking for.
I'm sure a lot of you are saying "duh" right now.
Er, most computer rooms don't have direct access to the outside (no windows, no outside doors). Usually they're buried in the middle of the building past a couple layers of security.
I'd nix that Dry ice idea. Most server rooms don't have paricularly good ventilation despite the large amounts of A/C in use (it's mostly recirculated air). Releasing large amounts of CO2 into the room might just turn your server room into a silent deathtrap.
I think it's the kind of people those discount retailers attract. Have you been to your local Wal*Mart and noticed the White Trash Factor? Plus these guys probably feel safer at Wal*Mart because they blend in with the crowd much better than they would at say Lord and Taylor.
Er, the only think the IRS would be able to bill you on due to satellite intelligence would be an under-the-table roof repair.
The local Harris Teeter has those self checkout things. It's basically one aisle that has 4 self checkout counters and one "supervisor". It's great if you only have a few items because people don't seem to like them a lot, so there's almost always at least one open. The downside is that the mechanism is a bit slow (you have to place whatever item you just scanned into the bag before scanning the next item, which is somewhat inefficent). If you buy alcohol the machine stops and you have to go up to the cashier to show them your ID. Coupons work fine (just scan them in), produce is done the same way the cashiers do it, you punch in the four digit code on the sticker (or look it up if the sticker is missing), and either weigh it on the scanner or just punch in the quantity. When you're done you can either scan a credit/debit card, or walk up to the supervisor to pay cash/check. If you use a credit card you have to walk up to the supervisor to sign the recipt, but with a debit card you don't even have to do that.
The system works great, and it means I can checkout in 5 minutes almost every time. It's far faster than the "express" lane 90% of the time. The only time I go to the cashiers is when I've got a lot of groceries.