I have recently encountered the following layout problem. Was thinking it affects only one site (sorry forgot which one), but then seen exactly the same issue at SuperUser.  The problem is: Question title is misaligned. Also, the "Tell Me More" banner for non-logged-in users is misaligned as well.  The problem occurs in the following browsers, Windows 7/x64; visual appearance is merely equal:   Firefox 21.0; switching off AdBlock Plus does not affect; Internet Explorer 9.0.8112.16421 (clear, no plugins) Chrome 27.0.1453.116 m (clear, no plugins)    Firefox 21, logged in normally   Internet Explorer 9, not logged in   Internet Explorer 9, clicked to close "Tell Me More" banner   Chrome 21; not logged in, clicked to close "Tell me more"    Update: The following CSS is in question:  #header #hmenus {     float: left;     padding: 20px 0px 25px 10px;     margin-top: 10px;     width: 725px;   }  Removing float and width makes it working fine.
It appears that on Server Fault and Super User, the navigation bar and question title have suddenly become misplaced. The same does not occur on SO and mSO, nor on any of the other SE sites I spot-checked.  This is being seen in both Chrome and Firefox and just began occurring within the last few minutes.      What it should look like:      While this was fixed for a few hours, it has returned as of 22:05.
Overleaf V2 - How to get BBL File? Let $X_1, X_2, \ldots X_n$ be random variables with mean $\mu$ and variance $\sigma^2$. We define the sample mean $\bar{X} = \sum_{i = 1}^n X_i$.  I am having trouble understanding why the variance of $\bar{X}$ is $\sigma^2 / n$.  Here is what I worked out thus far:  $$\begin{gather} \sigma_\bar{X}^2 = E((\bar{X} - \mu)^2) = E(\bar{X}^2 - 2\bar{X}\mu + \mu^2) = E(\bar{X}^2) - 2\mu E(\bar{X}) + E(\mu^2) = E(\bar{X}^2) - \mu. \end{gather}$$  However, I'm not sure what to do with the $E(\bar{X}^2)$. Blocking web sites with Windows Firewall Say, for example, you have a card that is still legal in standard but the version you have of it comes from a set that has since been rotated out. Can you still play the version from your older set? WHERE IN (array of IDs) I have webservice which is passed an array of ints. I'd like to do the select statement as follows but keep getting errors. Do I need to change the array to a string?  [WebMethod] public MiniEvent[] getAdminEvents(int buildingID, DateTime startDate) {         command.CommandText = @"SELECT id,                             startDateTime, endDateTime From                             tb_bookings WHERE buildingID IN                             (@buildingIDs) AND startDateTime &lt;=                             @fromDate";      SqlParameter buildID = new SqlParameter("@buildingIDs", buildingIDs); } Since multiple inheritance is bad (it makes the source more complicated) C# does not provide such a pattern directly. But sometimes it would be helpful to have this ability. For instance I'm able to implement the missing multiple inheritance pattern using interfaces and three classes like that: public interface IFirst { void FirstMethod(); } public interface ISecond { void SecondMethod(); }  public class First:IFirst  {      public void FirstMethod() { Console.WriteLine(&quot;First&quot;); }  }  public class Second:ISecond  {      public void SecondMethod() { Console.WriteLine(&quot;Second&quot;); }  }  public class FirstAndSecond: IFirst, ISecond {     First first = new First();     Second second = new Second();     public void FirstMethod() { first.FirstMethod(); }     public void SecondMethod() { second.SecondMethod(); } }  Every time I add a method to one of the interfaces I need to change the class FirstAndSecond as well. Is there a way to inject multiple existing classes into one new class like it is possible in C++? Maybe there is a solution using some kind of code generation? Or it may look like this (imaginary c# syntax): public class FirstAndSecond: IFirst from First, ISecond from Second { }  So that there won't be a need to update the class FirstAndSecond when I modify one of the interfaces.  EDIT Maybe it would be better to consider a practical example: You have an existing class (e.g. a text based TCP client based on ITextTcpClient) which you do already use at different locations inside your project.  Now you feel the need to create a component of your class to be easy accessible for windows forms developers. As far as I know you currently have two ways to do this:  Write a new class that is inherited from components and implements the interface of the TextTcpClient class using an instance of the class itself as shown with FirstAndSecond.  Write a new class that inherits from TextTcpClient and somehow implements IComponent (haven't actually tried this yet).   In both cases you need to do work per method and not per class. Since you know that we will need all the methods of TextTcpClient and Component it would be the easiest solution to just combine those two into one class. To avoid conflicts this may be done by code generation where the result could be altered afterwards but typing this by hand is a pure pain in the ass. itoa() is a really handy function to convert a number to a string. Linux does not seem to have itoa(), is there an equivalent function or do I have to use sprintf(str, "%d", num)? How do I enable error reporting in PHP? Why $f(x) = \sqrt{x}$ is a function? Why $f(x) = \sqrt{x}$ is a function (as I found in my textbook) since for example the square root of $25$ has two different outputs ($-5,5$) and a function is defined as "A function from A to B is a rule of corre- spondence that assigns to each element in set A exactly one element in B.", so $f(x) = \sqrt{x}$ is not a function? How do I move the MySQL data directory? I am trying to move the data directory of my MySQL database to a second disk array that I have as a mount point /array2/.  The problem I am having is I have tried everything and after I modify the location of datadir in my.cnf mysql will not start up again.  All I get is:  start: Job failed to start Is the function $\mbox{tr}(XAX')$ convex? Is the function $\mbox{tr}(XAX')$ convex, where $A$ is a positive semidefinite (PSD) matrix? I know that for a general $A$, the above trace function is not convex. But for a PSD $A$, is the function convex? How to run a background task in a servlet based web application? Why do most 2D platformers start off in the left and progress in the right direction? In almost all 2D platformers I've played, your avatar always starts off on the left side of the world, and continues on to the right. Is there something designers gain by doing this? Let $s_n$ be a sequence defined as given below for $n \geq 1$. Then find out $\lim\limits_{n \to \infty} s_n$.   \begin{align}   s_n = \int\limits_0^1 \frac{nx^{n-1}}{1+x} dx  \end{align}  I have written a solution of my own, but I would like to know it is completely correct, and also I would like if people post more alternative solutions. Suppose the mean noon-time temperature for September days in San Diego is 24∘ and the standard deviation is 4.9. (Temperature in this problem is measured in degrees celsius)  On September 26, 1963, the all-time record of noon-time temperature in San Diego of 44∘ was hit. Assume the temperature distribution is symmetric around the mean, what is the Chebyshev bound for the probability of breaking (or tieing) this record?  I am having a hard time understanding this. Could someone explain to me how to do this? I never want my PNGs to be interlaced. So I wish I could set a bunch of option defaults in the application so that I am saving time when outputting a lot of images as PNG over the course of a day working in Photoshop.  Does anyone know if this is possible in Photoshop without using Actions OR the Save-for-Web option? No indent in the first paragraph in a section? I am just curious that the following format looks good to you or not? The preamble I used is just   \documentclass[12pt,a4paper]{article}  \usepackage{amsmath} \usepackage{amsthm} \usepackage{amssymb}   I don't feel it's so good because the first paragraph has no indent but the second does. If the first paragraph is much longer, than it's fine. But if not, it looks strange. Should I leave it, or you have suggestions for this? Accessing the web page's HTTP Headers in JavaScript For an irrational number $\alpha$, prove that the set $\{a+b\alpha: a,b\in \mathbb{Z}\}$ is dense in $\mathbb R$ I am not able to prove that this set is dense in $\mathbb{R}$. Will be pleased if you help in a easiest way. $A=\{a+b\alpha: a,b\in \mathbb{Z}\}$ where $\alpha$ is a fixed irrational number. Are PPAs safe to add to my system and what are some "red flags" to watch out for? I see a lot of interesting programs out there that can only be obtained by adding a "PPA" to the system but, if I'm understanding correctly, we should stay within the official "repositories" for adding software to our system.   Is there any way for a novice to know if a "PPA" is safe or if it should be avoided? What tips should the user know about when dealing with a PPA?.