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C++, array of objects without What are the guidelines for using version-specific tags? I believe that some of my questions were asked before but I didn't find any satisfying guidance. I just found only . I hope senior members will help me to understand the situation and use tags correctly.  I have several questions which are related to following explanation:   What is current community's attitude towards version specific tags on Stack Exchange?  How to correctly use version specific tags?  When is it good to create version specific tag? Should any version specific tags be at least marked as synonyms to version unspecific tags? Should I use version specific tags if I re-tagging questions?  Should I re-tag questions if I think that incorrect version specific tag is used?   For example, I mainly visiting questions related to two main topics: WCF and Entity framework. Tagging questions in these topics follow very different rules. WCF uses single main tag  sometimes combined with  currently proposed as synonym to WCF, whereas Entity framework currently have:      - version 2 and 3 never existed  - I started this tag myself but now I think it was a mistake   and two ridiculous tags (both for CTP5 of EF 4.1 – their meaningful lifetime was about 3 months):         I've already several times retagged questions introducing tag for EF 4.1 RC. Separate problem is in Code-first approach related strictly to  where 5 other tags are used to describe the same:           I asked for merging these tags in .  As you can see that EF topic currently contains too many tags to describe the same. There are other related tags to EF but they are mainly used as supporting tags for specific features.  First I thought this is a common situation because ASP.NET MVC uses also new tag for each version even questions usually asks for general problems related to any version but then I was informed by @Richard in  that EF is probably tag polluted.  I regularly retag questions in EF topic. Currently I'm using:     as general topic's tag because I was already informed by @Slauma  that people usually have only this tag between their favorites and I should not remove it. It was a good point.   for questions related directly to EFv4 features  for questions related directly to EF 4.1 features  for questions related to fluent and annotations mapping from EF 4.1   But still I think that  and  are somehow redundant but I'm not sure if my opinion is shared by other participants in these tags. WCF also has 3 versions and almost twice as more questions than EF and it still uses only single main tag  without any problem. I think the used version should be information included in a question.  Are there any general rules? What about version related tags to C#, .NET and ASP.NET MVC? I first thought that it is common and accepted approach to create version specific tags just because users around ASP.NET MVC (strong tag) do the same.  Sometimes I think I received privileges too early and I don't use them correctly. I need some guidance. What does ` (backquote/backtick) mean in commands? I came across the following command:  sudo chown `id -u` /somedir   and I wonder: what is the meaning of the ` symbol. I noticed for instance that while the command above works well, the one below does not:  sudo chown 'id -u' /somedir After reading an article about Ubuntu's netflix support I decided to try running netflix through chromium but I got this error code: M7063-1913 I assumed that it was a problem with html5 but in the playback preferences it doesn't give me the option to use it. unable to reset root password of mysql Let $X \sim Bin(n,p)$ show that $X/n \nsim Bin()$ Let $X \sim Bin(n,p)$   Part A.  Show that the argument      "Then $X/n \sim Bin()$ with $E[X/n]=p$and $Var[X/n]=pq/n$"    is false.   My book says we can prove this result using a moment generating function. But to me it makes no intuitive sense: We have Bin-distributed RV $X$ and if we rescale it with $1/n$ of course it will be Bin-distributed.  And we know from standard formulas that $E[aX]=aE[X]$ and $Var[aX] = a^2Var[X]$ so I think the argument is correct.   (For full disclosure, the argument we should falsify according to the book is "Let X be a binomial random variable with mean np and variance np(1−p). Show that the ratio X/n also has a binomial distribution with mean p and variance p(1−p)/n." But I think the argument is correct. )    Ok, now I get part A. Here is Part B. Prove it using the moment generating function of $X/n$.   Attempt: I get $$m_X(t)=E[\exp(tX/n)]=(m_X(t))^{1/n}$$ "going to" definition, does it imply intent? I have had a debate with one of my friends about this little game:  "1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going to the river. Each monkey had 1 tortoise in each hand. How many animals are going to the river?"  Answers:   4 - if you could rabbit and monkeys (which are described as "going to" the river)  10 - if you are counting tortoises in monkeys' hands 19 - if you assume all   my argument is that the tortoises are not "going to", but are being either "taken to" or "move towards" river. That's what I would say if someone holds me and goes to the river.  my friend's argument is that because they move towards the river, they are "going to" the river. he gave example of me being in the car.  Me: If I don't intend to go there, I'm being "taken to", even if in the car.  Question: does "going to" implies intent of the subject ? Is it feasible to transform each variable differently while doing multiple regression I have a dataset with 10 variables ...is it feasible to transform each variable differently while doing multiple regression...  for example new_V1 = log(v1)  New_V2= V2^2  New_V3= 1/V3  Likewise differently for different variables and then applying multiple regression? Does there exist a continuous function $\: f : \mathbf{R} \to \mathbf{R} \:$ such that for   all  functions $\: g : \mathbf{R} \to \mathbf{R} \:$, for all real numbers $x$,  there exists a real number $y$ such that $\: x &lt; y \:$ and $\: g(y) &lt; f(y) \:$? Definition of e I'm very eager to know and understand the definition of $e$. Textbooks define $e$ as follows $$ e = \lim_{p\to\infty} \left[1+\frac1{p}\right]^p \approx 2.71828 $$ Is there an &quot;easy to understand&quot; proof of this? I'm really looking for a derivation of this which is very intuitive and easy to comprehend. By the way I'm watching . How can I find out the size of a block device, such as /dev/sda? Running ls -l gives no useful information. Total of attribute field of point layer per polygon layer I have a polygon shapefile of many lakes, I also have a point shapefile of locations on those lakes where fish were caught.  The point shapefile contains the attributes: Fisherman_iD, Fish_Caught, Lat, Long.  The polygon shapefile contains the attributes Lake_name, Points_per_polygon(PNTCNT)  Each point obviously has differing entries under the fish_caught field.   What I want to get is the average fish caught per lake (polygon).  So I need to have a total number of fish caught, per individual polygon, and then I can divide that by the PNTCNT file I create using the Points in a Polygon tool.  Ideas? I am relatively new to QGIS. Delete all but top n from database table in SQL What's the best way to delete all rows from a table in sql but to keep n number of rows on the top? Maximum sum sublist? What geometric object is given by this equation? How do you list the primary key of a SQL Server table? I'm using LyX on Linux Mint 14 ...  Using BibTeX with the apalike style and some modifications in the preamble, I've managed to get the bibliography as it should be except for one thing. When I cite a work with multiple authors it gets printed with the separator "and" which isn't correct for my language (Danish). Curiously it's displayed correctly in the user interface of Lyx - for example "(Wittgenstein og Waismann 2003 - which led me to believe everything was ok but in the pdf the separator "and" is used both in the reference and in the bibliography.  Is there any way to fix this using BibTeX, or can it only be done with biber 1.5, as suggested in the last comment here:   I really hope their is because getting biber to work using the following guide has thus far proven to be impossible:   Help much appreciated ... I really hope I won't have to relapse into setting my master thesis up in LibreOffice. How can I withdraw a publication from a predatory (fake) journal and resubmit to a legitimate journal? I have published a paper in a fake journal. I want to withdraw the paper from that journal.   After successful withdrawal from the fake journal, can I can submit the same paper to a legitimate journal? How do I run Python code as a script? I've read  about how some publishers (e.g., Springer) allows authors to submit to arXiv before journal submission, but they make authors wait for a year after acceptance to submit to arXiv.   My question is: Is it okay to submit to arXiv during the time when the paper is under consideration by the journal, for example after it has been "revised and resubmitted" but before final decision?