SQL injection reported in script and I can't find it
How can I prevent SQL injection in PHP?
Names of some months don't make sense I'm not a native English speaker but I'm always trying to do my best. Unfortunately I have a real problem with dates for some odd reason, I couldn't learn when was my birthday until I was 12 years old.  Anyway, as I was learning names of the months on English, and since I know some Latin from high school I noticed that English months don't match up with their Latin numeral counterparts. For example:  September - 9. month October - 10. month November - 11. month December - 12. month  While on latin septem, octo, novem and decem are words for 7, 8, 9 and 10.  So, does anyone know why is that. At first I thought it had something to do with switch from Julian to Gregorian calendar but I figured it's too small of a difference.  Anyone? :) PostgreSQL, SELECT from max id Please check my simplification for x? Show $||Tx||_2 \leq ||(v_n)||_2 \cdot ||x||_{\infty}$ Let $(v_n)_{n \geq 1} \in \ell ^2$ be a fixed bounded sequence of real numbers. Define a mapping $T$ on $\ell ^{\infty}$ using the formula $$T(a_1, a_2,...)=(v_1a_1,v_2a_2,...), \, \, \, \, \, x=(a_1,a_2,...) \in \ell^{\infty}$$  We can use the fact that, $Tx \in \ell^2 $ for every $x \in \ell^{\infty}$ and $T: (\ell^{\infty},||\cdot ||_{\infty}) \rightarrow (\ell^{2},||\cdot ||_{2})$ is a linear operator.  Show $||Tx||_2 \leq ||(v_n)||_2 \cdot ||x||_{\infty}$ for all $x \in \ell^{\infty}$    Here is what I tried:  $||Tx||_2 = \bigg( \sum v_k^2 a_k^2 \bigg)^{1/2} \leq (||x||_{\infty}^2 \sum v_k^2 )^{1/2}= (||x||_{\infty}^2 ||(v_k)||_2^2 )^{1/2} = ||(v_k)||_2 \cdot ||x||_{\infty}$  Is this OK? I'm interested: What is C#'s analog of std::pair in C++? I found System.Web.UI.Pair class, but I'd prefer something template-based.  Thank you! Do gravitons interact with each other? I always thought the non-linearity of Einsteins field equations implies that there should be direct graviton-graviton interactions. But I stumbled upon  which argues:     If gravitons exist, then, like photons and unlike gluons, gravitons do   not interact with other particles of their kind. That is, gravitons   carry the force of gravitation but are not affected by it. This is   apparent due to gravity being the only thing which escapes from black   holes, in addition to having an infinite range and traveling in   straight lines, similarly to electromagnetism.   Is Wikipedia correct? If not, why not? And what then are the arguments that there must be graviton-graviton interactions?    (As of this question being asked, the above paragraph has been removed from Wikipedia.) The temperature of an electron Does an electron have a temperature, if so, what is it?  Imagine an electron (Ke = 1 eV) in a tube at room temperature (300 K)    what is its temperature?   Imagine now same electron in space (3 K) with same Ke, is it any different from the other?  What is the influence of external temperature on electrons?  Do those electrons have electric energy, or do we have such energy only when the electron hits something and discharges its Ke? I recently installed the apache2 package using the Software Centre, I want to create an alias apacheres which will replace the more cumbersome command /etc/init.d/apache2 restart.  I opened the .bashrc file in my home directory, and it contains the following lines:  # Alias definitions. # You may want to put all your additions into a separate file like # ~/.bash_aliases, instead of adding them here directly. # See /usr/share/doc/bash-doc/examples in the bash-doc package.  if [ -f ~/.bash_aliases ]; then     . ~/.bash_aliases fi   So I created a .bash_aliases file in my home directory, and added only this line:  alias apacheres ='/etc/init.d/apache2 restart'  When I started my terminal, I get this error message:  bash: alias: apacheres: not found bash: alias: =/etc/init.d/apache2 restart: not found   The shell has obviously read the file, otherwise it wouldn't know of its existence. I have checked the directory path and I can find the file apache2 there. What do I need to do to make this alias work? triggered my curiosity for this question. Why most of manga are black and white? Is this because of more cost if they add colors to it? How did the AT-ATs get to the surface of Hoth? I'm curious how these beasts got down to the surface of Hoth.    Did the Galactic Empire land them in big ships, if so which ones? I'm looking at creating a basic ORM (purely for fun), and was wondering, is there a way to return the list of tables in a database and also the fields for every table?  Using this, I want to be able to loop through the result set (in C#) and then say for each table in the result set, do this (e.g. use reflection to make a class that will do or contain xyz).  Further to this, what are some good online blogs for SQL Server? I know this question is really about using system SPs and databases in Sql Server, and I am ok with general queries, so I'm interested in some blogs which cover this sort of functionality.  Thanks Why is using "for...in" for array iteration a bad idea? Connecting to Oracle database with ArcGIS for Desktop? Show that $\int_0^\pi f(\sin x)\,\mathrm{d}x = 2\int_0^{\pi/2}f(\sin x) \, \mathrm{d}x$ Types of things vs. types of thing Do file-extensions have any purpose (for the operating system)? Linux determines the type of a file via a code in the file-header. It doesn't depend on file-extensions for to know which software is to use for opening the file.  That's what I remember from my education. Please correct me in case I'm wrong!  Working a bit with Ubuntu systems recently: I see a lot of files on the systems which have extensions like .sh, .txt, .o, .c  Now I'm wondering: Are these extensions are meant only for humans? So that one should get an idea what kind of file it is?  Or does they have some purpose for the operating-system too? How to avoid modifications during pg_dumpall Assigning values to divergent series I have been looking at divergent series on wikipedia and other sources and it seems people give finite "values" to specific ones. I understand that these values sometimes reflect the algebraic properties of the series in question, but do not actually represent what the series converges to, which is infinity. Why is it usefull to assign values to divergent series?  The only theory I could come up with, is this:  Say you have 2 divergent series, series' A and B, and you assign each a value,   Series ($A= \sum_{n=0}^\infty a_n$), which I assigned the value Q  and series ($B= \sum_{n=0}^\infty b_n$ ), which I assigned the value P  But it just so happens that series $C=A-B= \sum_{n=0}^\infty (a_n-b_n)$ converges. Could that imply that the actual value of series $C$ is the difference of the two assigned values to $A$ and $B$, that is $\sum_{n=0}^\infty (a_n-b_n)=Q-P$ ?  If so, then that would make some sense to me, as to why people sometimes assign values to divergent series. Is "princessship" a real word? Are there any other words which have the same letter 3 times consecutively? How to mount an ISO file? I'm running into trouble trying to mount a large iso:  dev@dev-OptiPlex-745:~$ sudo mount -o loop /home/dev/Hämtningar/matlab2011a_64.iso /cdrom mount: warning: /cdrom seems to be mounted read-only. dev@dev-OptiPlex-745:~$    Can you tell me how I should do it?