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Since ~1999 everyone has been saying that TCP/IP v6 will replace v4 within then next couple of years. When might the change actually happen and what will be the implications?
No one can answer that question.
Valid answers may be anything from "any day now" to "never". What do you expect people to say?
IpV6 is actually gaining pretty good traction if you bother to take a look at Googles graphs and the number of AAAA hosts being published in the global DNS. And all mainstream operating systems (Windows, OS X, Linux, FreeBSD) support it out-of-the-box.
What more do you want? You cannot get any guarantees or (realistic) promises.
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What were the design decisions that led to R having often more than one way of doing things, that have subtle difference? See, for a good example,
https://www.r-bloggers.com/r-na-vs-null/
More more such issues are here, some which are justified, some which are not http://r4stats.com/articles/why-r-is-hard-to-learn/
From a software engineering perspective, having such choices in a language screams for having subtle and hard-to-find bugs in your code (e.g. in Python the whole point of writing "pythonic" code, that avoids ambiguity and is easy to read and consistent in style). So there must be some major advantages of having that. What are they?
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I have looked around and have not found many opinions on if it is important to update your R software as soon as a new version is released.
Any opinions would be welcomed!
As with any software, you should carefully evaluate what is included in any new release. If the release consists only of bug-fixes, it is usually expedient to install it as soon as it is practicable for you to do so. If the scope of the release is more expansive -- new features, etc. -- you should review the release more carefully.
If you're in the middle of an important project with a killer deadline, it's quite reasonable to wait a little while before applying any update.
Also, you should as a matter of routine re-run a selection of jobs, that you know the answers to, in order to be sure that the answers are still the same. "No, mistakes of this nature don't happen often, but they do happen."
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I bought a RC Helicopter and I'm just wondering that it's possible to be reprogrammed or not?
If can how to do that? I know this question sounds ridiculous. :)
Thanks for replying
What do you mean reprogrammed?
If you want to make the remote control a light instead of a motor, the answer is yes. If you mean add any intelligence to the toy, the answer is no.
If you are interested in programming, building robots etc, look into microcontrollers. The Arduino is a great one for young enthusiasts.
Some parts of the RC helicopter you can reprogrammed like the ESC, and the main circuit board always can't reprogrammed. Of course, there was exception, for some beta version, most of the board you can reprogrammed in limitted range
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Does anyone still use it? xlib seems such an old framework?
what other major similar software is used instead of this old xlib?
What is used instead of xlib?
XLib is still used in most X11 toolkits however, there is a newer library called XCB that is slowly replacing it. XCB is lower level than XLib and allows you to minimise the number of round-trips to the X server leading to lower latency.
http://xcb.freedesktop.org/
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Are there any software versioning standards? Or i can change version of my product, when i have made some changes to it?
Is there any percentage in changes, by which i can say, what version this product will have?
Some people have proposed software version number conventions. Here are two:
Semantic Versioning
Apache APR Version Numbering Concepts
No rules. You decide.
There seems to be a common agreement:
You increment the version number when you make significant changes or the amount of service packs and updates makes the application noticeably advanced over the original version.
The smaller a change is, the smaller the increment in subversion numbers. Bug fix -> behavior change -> new feature -> service pack for lots of features -> some big change or a new module.