Why was 1 considered as prime years ago?
Why is $1$ not a prime number?
I'm looking for a programmers' editor. I know Xcode and I use it for application programming but I'm looking for something that will:   Syntax highlight PHP, SQL, Javascript (including jQuery) and CSS not required but would be nice; also Lua, Python, and Perl    IntelliSense type stuff, start typing and get all the functions/objects/variables it could be and any parameters. Xcode does this well for C/C++/Objective-C but looking for languages that are listed above. Would be nice if it worked with projects and not just files    Integrated with SVN, CVS, or GIT Had upload-to-server functionality built in   I am aware of  but am looking for other options before I drop 100 bucks. Is the git storage model wasteful? Should we MAC-then-encrypt or encrypt-then-MAC? Most of the time, when some data must be encrypted, it must also be protected with a , because encryption protects only against passive attackers. There are some nifty encryption modes which include a MAC (, ...) but let's assume that we are doing old-style crypto, so we have a standalone encryption method (e.g. AES with CBC chaining and PKCS#5 padding) and a standalone MAC (e.g.  with SHA-256). How should we assemble the encryption and the MAC?   MAC-then-Encrypt: Compute the MAC on the cleartext, append it to the data, and then encrypt the whole? (That's what  does) Encrypt-and-MAC: Compute the MAC on the cleartext, encrypt the cleartext, and then append the MAC at the end of the ciphertext? (That's what SSH does) Encrypt-then-MAC: Encrypt the cleartext, then compute the MAC on the ciphertext, and append it to the ciphertext? (In that case, we do not forget to include the initialization vector (IV) and the encryption method identifier into the MACed data.)   The first two options are often called "MAC-then-encrypt" while the third is "encrypt-then-MAC". What are the arguments for or against either? How do I get object names to appear in the render? In my scene I have multiple objects (30+). In the viewport I have the handy control of selecting (in the Properties Editor) Object> Display> Name and copying to selected.  This is beautiful for diagrams etc. as wherever my view is at whatever distance these labels have been placed instantly, always face me and are always the same size.  How can you get these to display in a rendered view?  Is the ONLY option to manually create a label for each object, get them to track to your camera (Probably have to track to an empty miles behind your camera rotation otherwise they offset if your camera isn't facing exactly front on to an object) and add some sort of scaling property to change depending on how far away you are? Allow Documentation in other Stack Exchange communities I'm a Salesforce developer and would love Documentation to be available in other Stack Exchange communities. The reason is  a lot of Salesforce developers get help, especially newer ones like myself. The developer forums and documentation on  is mediocre. It would be nice to allow users to create their own and give pack on Using fflush(stdin) Is there a C++ decompiler? Why is the Lagrangian a function of the position and velocity (possibly also of time) and why are dependences on higher order derivatives (acceleration, jerk,...) excluded?  Is there a good reason for this or is it simply "because it works". Sharepoint 2010 - Deploy webpart as Feature scope = web Why do you have to use copy_to_user()/copy_from_user() to access user space from the kernel? Is there a closed form solution for the following series? (Without Using Gamma Function): $$ S=\sum _{i=1}^{n-1} \frac{1}{(i+1)!} $$ Prove $\sin(x)\tan(x) > x^2$ for $x \in ( \,0, \frac{\pi}{2}) \,$ Prove $\sin(x)\tan(x) &gt; x^2$ for $x \in ( \,0, \frac{\pi}{2}) \,$  So I did the following: Let $f(x) = \sin(x)\tan(x) - x^2$.  Then of course $f(0) = 0$ and I want to show that for $x \in ( \,0, \frac{\pi}{2}) \,$ $f'(x) &gt; 0$ but I don't really know where to go from here as I can't get anything reasonable done with the derivative.  I was thinking of approximating it using the following inequality $\sin(x) &lt; x &lt; \tan(x)$.   Is that a good direction? Flow to get all site collections in a tenant Created a Flow by using the below REST call and stored the title and Urls in another list  /_api/web/lists/getbytitle('DO_NOT_DELETE_SPLIST_TENANTADMIN_ALL_ SITES_AGGREGATED_SITECOLLECTIONS')/items?$select=Title,SiteUrl   Here the problem is it is returning only 100 items but I have 360 site sollections.   Not sure what I am doing wrong How can I add "Show desktop" to the GNOME dash or Ubuntu Dock? The is sometimes pronounced &quot;tha&quot; (/ðə/) or &quot;thi&quot; (/ðiː/). Which is the correct pronunciation of this word? Are both correct and used interchangeably at specific places? If the second question is correct, please provide the rule of pronouncing at different places. I am thinking of building a model predicting a ratio $a/b$, where $a \le b$ and $a &gt; 0$ and $b &gt; 0$. So, the ratio would be between $0$ and $1$.  I could use linear regression, although it doesn't naturally limit to 0..1.  I have no reason to believe the relationship is linear, but of course it is often used anyway, as a simple first model.  I could use a logistic regression, although it is normally used to predict the probability of a two-state outcome, not to predict a continuous value from the range 0..1.  Knowing nothing more, would you use linear regression, logistic regression, or hidden option c? When does a reaction happen if the trigger is movement? Selection of logical connectives {¬,∨,∧,⇒,⇔} in set theory? How to show wifi password? If we disbelieve $H_0$, why quote a p value calculated assuming $H_0$ was true?