I've been programming only in C++, and to tell you the truth, I seldom have crashes, and when I do, 99% of the time they're easy to fix. Most bugs I get are not crashes, just bugs in the business logic, and they would still happen in Java.
I must admit that I'm kind of envious of how you get a nice stack trace when you have a crash in Java (an unhandled exception).
Say what you will about the language itself but C++ has a very small standard library. Compare it to something like.Net or Java which is huge. This is one if the big complaints about the language is any real program written in it will have to use a ton of 3rd party libraries. Everyone uses different libraries and it this makes it difficult to combine code together.
That is why I prefer using Qt these ways. It's a great standard library, it's the C++ answer to Java and.NET.
I remember someone telling me a story of a student that put a small laser on his glasses, that would shoot light directly on his retina, in order to produce an image. He used that to cheat on tests.
I always wondered if it was true.
It sounds like a CRT, only your retina is the surface where the scan-lines are produced.
That someone can do this. Not theoretically I mean, it's obvious you can, but nobody actually went and did this until now (or they did but I haven't heard about it).
It's a proof-of-concept. It doesn't matter what they use for transmission really, and they could change it in the future if it's a real problem. They could also go the other direction - with 3G, this could have a very big range indeed, albeit not a very good bandwidth and latency.
I imagine the first PCs in the 70s didn't look as good as a UNIX workstation or a mainframe either. Didn't IBM say they won't waste their time with 'toys'?
WIFi is non-ionising radiation and so has similar issues to other radiation using similar frequencies such as mobile telephones and microwave ovens. These produce heating effects. WiFi is not focused, so any impact should be very small and perhaps not measurable.
I am not aware of any health studies specifically on WiFi. There have been studies on mobile phones which has shown that while the phone is in use and held next to the head, there is small but measurable heating effect on human tissue. My guess is that it has less impact than standing at right angles to the Sun so one side of the head gets warmer faster than the other. Even then, these studies have produced no evidence that this has any health impact, positive or negative:
A large body of research exists, both epidemiological and experimental, in non-human animals and in humans, of which the majority shows no definite causative relationship between exposure to mobile phones and harmful biological effects in humans. And per Dr. Michael Clark of the HPA, WiFi is a fraction of the energy of a cell phone:
“When we have conducted measurements in schools, typical exposures from wi-fi are around 20 millionths of the international guideline levels of exposure to radiation. As a comparison, a child on a mobile phone receives up to 50 per cent of guideline levels. So a year sitting in a classroom near a wireless network is roughly equivalent to 20 minutes on a mobile. If wi-fi should be taken out of schools, then the mobile phone network should be shut down, too — and FM radio and TV, as the strength of their signals is similar to that from wi-fi in classrooms.” The Sun does emit ionising radiation (ultra violet) and that has significant health effects such as sunburn, pigmentation changes and Vitamin D production. WiFi's impact, if anything, is nothing like this.
It has to do with the fact that only young people have had computers since childhood. In 40-50 years we'll live in a society where everyone regardless of age has had a computer all their life. Then an old man is going to be statistically as likely to be a programmer as a young man.
The whole concept of humanoid robots is kind of dumb to me. I mean I can get industrial robots, or autonomous vehicles like Google cars, but trying to make a humanoid robot is more like an obsession with dolls than anything. There's a reason the Japanese are best there, and I think it's because nobody else really cares about making moving dolls.
The pragmatic people who are trying to make robots that do useful work don't think about making them look like humans in the first place.
Even if it is more expensive, it doesn't matter, because if you're holding Bitcoins, you need to convert them anyway, so you'll be hit with the conversion cost no matter what.
BitCoin is not anonymous. BitCoin is pseudonymous... you need to trade bitcoins some way. You have to exchange your real money to bitcoins. ALL transactions are public which means it's really easy to start profiling people.
Yes but if you have Bitcoins in wallet A, you can create wallet B and move them to it. Now even if they know that wallet A is yours, how do they know that wallet B belongs to you (and not to someone else)?
There's about 12 million BTC in circulation at the moment. At the current price of $1,182 per BTC that's only $14 billion. That's the ENTIRE value of all bitcoins available right now.
They can't, because if they tried that, the price would rise. The spot price is the price where you can buy an **insignificant amount**, at least compared to the total amount of Bitcoins.
I still now how to do./configure && make install, I just don't want to, because you have to find all the dependencies and build them, too. apt-get is awesome, on the other hand.
Yep, surrounding in double quotes the word will make Google stop guessing.
I also really liked how you could make a phrasal search with just dash - i.e. search-term used to be equivalent to "search term", but they disabled that a long time ago.
One of the (very few) selling points for the new iPhone 5C and 5S is that they now come with Apple's spreadsheet program for free, so - yes, apparently this is a thing people want?
The fact that it comes with it doesn't mean it's the selling point.
The reason we still have silent letters and unusual spellings is the lack of spelling reform in English.
When I started learning German, I was surprised to find out that a lot of basic words - "Name" for example - are written the same way as English, you just pronounce them as they are written. In fact, if you start reading English phonetically, without weird odd cases, a lot of words sound like you're speaking German.
Besides, English speakers don't need subtitles to understand each other when speaking.
But is anyone buying them? I personally wouldn't invest $325, I buy Chinese only when the price is so low that I won't get angry if it breaks after one week.
Not home consumers - they don't care if Windows 7 is EOL, they'll use their PC till it dies. And for corporate customers, they usually install their own image on any new hardware they get, so Windows 8 coming pre-loaded won't help with them.
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The only 2 parts of STL that I use, like 99% of the time, is std::string and std::vector.
I've been programming only in C++, and to tell you the truth, I seldom have crashes, and when I do, 99% of the time they're easy to fix. Most bugs I get are not crashes, just bugs in the business logic, and they would still happen in Java.
I must admit that I'm kind of envious of how you get a nice stack trace when you have a crash in Java (an unhandled exception).
Say what you will about the language itself but C++ has a very small standard library. Compare it to something like .Net or Java which is huge. This is one if the big complaints about the language is any real program written in it will have to use a ton of 3rd party libraries. Everyone uses different libraries and it this makes it difficult to combine code together.
That is why I prefer using Qt these ways. It's a great standard library, it's the C++ answer to Java and .NET.
I remember someone telling me a story of a student that put a small laser on his glasses, that would shoot light directly on his retina, in order to produce an image. He used that to cheat on tests.
I always wondered if it was true.
It sounds like a CRT, only your retina is the surface where the scan-lines are produced.
That someone can do this. Not theoretically I mean, it's obvious you can, but nobody actually went and did this until now (or they did but I haven't heard about it).
Amazon is not happy to hear that.
It's a proof-of-concept. It doesn't matter what they use for transmission really, and they could change it in the future if it's a real problem. They could also go the other direction - with 3G, this could have a very big range indeed, albeit not a very good bandwidth and latency.
I imagine the first PCs in the 70s didn't look as good as a UNIX workstation or a mainframe either. Didn't IBM say they won't waste their time with 'toys'?
iPads have a good profit margin as well, Apple builds them for half the price they sell them at.
There's a question about that are Skeptics stack exchange - http://skeptics.stackexchange.com/questions/1178/are-wifi-waves-harmful
This is the answer:
===============
WIFi is non-ionising radiation and so has similar issues to other radiation using similar frequencies such as mobile telephones and microwave ovens. These produce heating effects. WiFi is not focused, so any impact should be very small and perhaps not measurable.
I am not aware of any health studies specifically on WiFi. There have been studies on mobile phones which has shown that while the phone is in use and held next to the head, there is small but measurable heating effect on human tissue. My guess is that it has less impact than standing at right angles to the Sun so one side of the head gets warmer faster than the other. Even then, these studies have produced no evidence that this has any health impact, positive or negative:
A large body of research exists, both epidemiological and experimental, in non-human animals and in humans, of which the majority shows no definite causative relationship between exposure to mobile phones and harmful biological effects in humans.
And per Dr. Michael Clark of the HPA, WiFi is a fraction of the energy of a cell phone:
“When we have conducted measurements in schools, typical exposures from wi-fi are around 20 millionths of the international guideline levels of exposure to radiation. As a comparison, a child on a mobile phone receives up to 50 per cent of guideline levels. So a year sitting in a classroom near a wireless network is roughly equivalent to 20 minutes on a mobile. If wi-fi should be taken out of schools, then the mobile phone network should be shut down, too — and FM radio and TV, as the strength of their signals is similar to that from wi-fi in classrooms.”
The Sun does emit ionising radiation (ultra violet) and that has significant health effects such as sunburn, pigmentation changes and Vitamin D production. WiFi's impact, if anything, is nothing like this.
It has to do with the fact that only young people have had computers since childhood. In 40-50 years we'll live in a society where everyone regardless of age has had a computer all their life. Then an old man is going to be statistically as likely to be a programmer as a young man.
The whole concept of humanoid robots is kind of dumb to me. I mean I can get industrial robots, or autonomous vehicles like Google cars, but trying to make a humanoid robot is more like an obsession with dolls than anything. There's a reason the Japanese are best there, and I think it's because nobody else really cares about making moving dolls.
The pragmatic people who are trying to make robots that do useful work don't think about making them look like humans in the first place.
Even if it is more expensive, it doesn't matter, because if you're holding Bitcoins, you need to convert them anyway, so you'll be hit with the conversion cost no matter what.
BitCoin is not anonymous. BitCoin is pseudonymous ... you need to trade bitcoins some way. You have to exchange your real money to bitcoins. ALL transactions are public which means it's really easy to start profiling people.
Yes but if you have Bitcoins in wallet A, you can create wallet B and move them to it. Now even if they know that wallet A is yours, how do they know that wallet B belongs to you (and not to someone else)?
There's about 12 million BTC in circulation at the moment. At the current price of $1,182 per BTC that's only $14 billion. That's the ENTIRE value of all bitcoins available right now.
They can't, because if they tried that, the price would rise. The spot price is the price where you can buy an **insignificant amount**, at least compared to the total amount of Bitcoins.
And what's wrong with X, really? I don't get it, it seems to work fine, Ubuntu uses X and has all the 3D graphics and transparencies.
I still now how to do ./configure && make install, I just don't want to, because you have to find all the dependencies and build them, too. apt-get is awesome, on the other hand.
Yep, surrounding in double quotes the word will make Google stop guessing.
I also really liked how you could make a phrasal search with just dash - i.e. search-term used to be equivalent to "search term", but they disabled that a long time ago.
One of the (very few) selling points for the new iPhone 5C and 5S is that they now come with Apple's spreadsheet program for free, so - yes, apparently this is a thing people want?
The fact that it comes with it doesn't mean it's the selling point.
By way of analogy, could the event horizons of black holes in our own universe host a 2D universes?
How long would it take to get used to it, though? I bet after a year it would be easy to read it.
The reason we still have silent letters and unusual spellings is the lack of spelling reform in English.
When I started learning German, I was surprised to find out that a lot of basic words - "Name" for example - are written the same way as English, you just pronounce them as they are written. In fact, if you start reading English phonetically, without weird odd cases, a lot of words sound like you're speaking German.
Besides, English speakers don't need subtitles to understand each other when speaking.
But is anyone buying them? I personally wouldn't invest $325, I buy Chinese only when the price is so low that I won't get angry if it breaks after one week.
Was his first search engine using page-rank or something like that to bring relevant searches, or was it just a web crawler + grep?
Not home consumers - they don't care if Windows 7 is EOL, they'll use their PC till it dies. And for corporate customers, they usually install their own image on any new hardware they get, so Windows 8 coming pre-loaded won't help with them.