Centering displayed math within enumerate environment
Equation left margin
How do we know the brain flips images projected on the retina back around? How do I use the different shutter speeds my camera offers? I am looking for a word that would describe being obsessed with the details of a larger entity such that the "looker" neglects to see the whole or (perhaps more importantly) the purpose of the whole.  Basically, "not seeing the big picture".  What can [more] succinctly describe this?  Edit: I just found this post: . I think I want the exact opposite. Log color bar/meta data in PGFPLOT Copy specific file type keeping the folder structure I know $[0,1]$ denotes the interval between 0 and 1 with the boundary. And $(0,1)$ denotes the interval between 0 and 1 without the boundary. Today, I encounter some expressions as $]0,1]$, $]-\infty,+\infty]$. What does $]0,1]$ mean? Thanks. After much trial and tribulation, I thought I had drush all ready to roar. Much excitement. But then, no joy...  Drush is working. The sites operate fine via MAMP. Regardless, a "drush cc all" command returns:   No Drupal site found, only 'drush' cache was cleared.                                          [warning] 'all' cache was cleared.                                                                       [success]   This question has stumped drupalcon attendees and very experienced developers. Any ideas?  I am on Mac OS 10.9.3 using MAMP (free) Version 3.0.5  Here is my drush status:   Drupal version         :  7.29-dev                                 Site URI               :  http://default                           Database driver        :  mysql                                    Database hostname      :  localhost                                Database username      :  db_user                             Database name          :  db_name                        PHP executable         :  /usr/bin/php                             PHP configuration      :                                           PHP OS                 :  Darwin                                   Drush version          :  7.0-dev                                  Drush temp directory   :  /tmp                                     Drush configuration    :                                           Drush alias files      :                                           Drupal root            :  /Applications/MAMP/htdocs/mysite.dev   Site path              :  sites/default       Have tried executing drush from /Applications/MAMP/htdocs/mysite.dev; from /Applications/MAMP/htdocs/mysite.dev/sites/default; and using drush cc all --uri=http://localhost/mysite.dev  Tried running drush from sites/default. Same result. How do you declare an interface in C++? How do I setup a class that represents an interface?  Is this just an abstract base class? Short circuit evaluation and side effects What would be the value of $\sum\limits_{n=0}^\infty \frac{1}{an^2+bn+c}$ I would like to evaluate the sum  $$\sum_{n=0}^\infty \frac{1}{an^2+bn+c}$$  Here is my attempt:    Letting    $$f(z)=\frac{1}{az^2+bz+c}$$  The poles of $f(z)$ are located at   $$z_0 = \frac{-b+\sqrt{b^2-4ac}}{2a}$$  and  $$z_1 = \frac{-b-\sqrt{b^2-4ac}}{2a}$$  Then  $$ b_0=\operatorname*{Res}_{z=z_0}\,\pi \cot (\pi z)f(z)= \lim_{z \to z_0} \frac{(z-z_0)\pi\cot (\pi z)}{az^2+bz+c}= \lim_{z \to z_0} \frac{\pi\cot (\pi z)+(z_0-z)\pi^2\csc^2 (\pi z)}{2az+b} $$  Using L'Hopital's rule. Continuing, we have the limit is  $$ \lim_{z \to z_0} \frac{\pi\cot (\pi z)+(z_0-z)\pi^2\csc^2 (\pi z)}{2az+b}= \frac{\pi\cot (\pi z_0)}{2az_0+b} $$  For $z_0 \ne 0$  Similarly, we find  $$b_1=\operatorname*{Res}_{z=z_1}\,\pi \cot (\pi z)f(z)=\frac{\pi\cot (\pi z_1)}{2az_1+b}$$  Then   $$\sum_{n=-\infty}^\infty \frac{1}{an^2+bn+c} = -(b_0+b_1)=\\ -\pi\left( \frac{\cot (\pi z_0)}{2az_0+b} + \frac{\cot (\pi z_1)}{2az_1+b}\right)=  -\pi\left( \frac{\cot (\pi z_0)}{\sqrt{b^2-4ac}} + \frac{\cot (\pi z_1)}{-\sqrt{b^2-4ac}}\right)= \frac{-\pi(\cot (\pi z_0)-\cot (\pi z_1))}{\sqrt{b^2-4ac}}= \frac{\pi(\cot (\pi z_1)-\cot (\pi z_0))}{\sqrt{b^2-4ac}} $$  Then we have  $$\sum_{n=0}^\infty \frac{1}{an^2+bn+c} = \frac{\pi(\cot (\pi z_1)-\cot (\pi z_0))}{2\sqrt{b^2-4ac}}$$    Is this correct?  I feel like I made a mistake somewhere.  Could someone correct me?  Is there an easier way to evaluate this sum? How to center text vertically within a textbox in Photoshop It's pretty annoying that you can't center text vertically in Ps automatically, like you can in Indd. It's even more annoying that the bounding box of text can't be 'collapsed' or 'fit to text', like in Indd.  I could convert the text to shape, but then I lose coloring. I could convert to smart object, but then its not vector anymore, for when I export to pdf.  Is there a work around anyone knows of that would make it easier to center text vertically? Currently, for all my commands that require root access, I have to type them out on a command line.  I would like for the GUI to prompt me to key in my password, when sudo is required, instead of having to type out the commands from command line.  Is there any way to enable this? Previously one version of Ubuntu desktop had this feature out of the box.  This version of Ubuntu (that I am now running) I upgraded from a server installation.  I will add, my user account is already added to sudo group. Thus I can run commands such as sudo gedit or sudo apt-get but I'm not able to install software in the Ubuntu Software Center. How to manually parse a floating point number from a string Why does my shell script choke on whitespace or other special characters? Eclipse Shortcut to Split Long Strings I swear I've seen someone do this, but I can't find it in the various lists of shortcuts.  Given:  String s = "A very long ............................ String";   Is there an Eclipse shortcut to turn it into:  String s = "A very long ............................ "      + "String"; When needing to ask a professor about something important and potentially delicate, what is an appropriate way to phrase the question or write the email?  Examples include:   Requesting a recommendation letter Asking for exceptions to policy (e.g., ignoring a course prerequisite, rescheduling an exam) Asking if you can do research with them, join a group, get into a program Scheduling a meeting, exam, or defense Letting them know about a change of plans Letting them know about a life event affecting your work or studies (e.g., wedding, funeral, sickness, vacation) If I see an answer that involves some illegal activity, such as breaking license agreements, should I then mark this as Offensive or should I simply down-vote it? "Switching" axes in 3d tikzpicture Overview  So say I want an arc between the x and z axis in the same way the following creates an arc between the x and y axis (MVCE):  \documentclass[border=5mm]{standalone} \usepackage{tikz} \begin{document}   \begin{tikzpicture}     \tikzset{       x={(0:1cm)},y={(50:0.7cm)},z={(90:1cm)}     }     \draw[-&gt;] (0,0,0) --++ (1,0,0) node[right]{$x$};     \draw[-&gt;] (0,0,0) --++ (0,1,0) node[right]{$y$};     \draw[-&gt;] (0,0,0) --++ (0,0,1) node[right]{$z$};     \draw (0,0,0) ++(0:.3) arc (0:90:.3);   \end{tikzpicture} \end{document}     One solution to this exact problem is to do scope and tell arc that the y-axis is the z-axis.      \begin{scope}       \tikzset{y=(90:1cm)}       \draw (0,0,0) ++(0:.3) arc (0:90:.3);     \end{scope}   The problem  However, I need this more generic since I don't necessarily know how the y-axis is defined, so I'm looking for a way to do, essentially this:      \begin{scope}       \switchYZAxes       \draw (0,0,0) ++(0:.3) arc (0:90:.3);     \end{scope}   or      \begin{scope}       \tikzset{y=\theZAxis}       \draw (0,0,0) ++(0:.3) arc (0:90:.3);     \end{scope}   The latter is problematic because it seems like I can't send polar coordinates to the \tikszet via a macro (which is the background for  question).  Any ideas? Thanks :) What would have happened if Voldemort had won Priori Incantatem before Nagini had been decapitated? As wielder of an elder wand that belonged to Harry, during Voldemort’s Last Stand, there are two instances of Priori Incantatem occurring, back to back.  Basically, the current order of events makes total sense. Since Nagini was the last horcrux, when the body died, the fragment of Voldemort’s soul locked in it was released. This disrupted the first instance of Priori Incantatem, and Voldemort was now significantly weaker than Harry – so Harry won. Naturally, the Elder Wand’s killing spell was reflected back on Voldemort because of Priori Incantatem outcome.   But, if Voldemort was just told by Harry that the Elder Wand wouldn’t work against Harry because it belonged to Harry, and was a wand that would win any duel for its master, why would Voldemort willingly try and continue to use it? This is doubly so, since after he had cast the killing spell on Harry once it had only torn Voldemort’s soul from Harry’s body – wouldn’t that even imply that the Elder Wand would realistically refuse almost any attempted direct harm against its owner?  Also, wouldn’t a first refusal of the Elder Wand to kill it’s own master also imply an additional refusal even if Voldemort had won either of the Priori Incantatem matches (in which case, the worst that could happen in this line of thinking is, Voldemort has Harry’s wand since Harry’s spell is Expelliarmus)? `tail -f` until text is seen I've got a CI server with a command-line interface that allows me to remotely kick-off a job (jenkins CI server and the jenkins-cli.jar tool).  After I kick the job off I tail -f the log (sorry for the messy command):  ssh -t my-jenkins-host.com "tail -f \"/var/lib/jenkins/jobs/$job_name/builds/\`ls -ltr /var/lib/jenkins/jobs/$job_name/builds/ | grep '^l' | tail -n 1|awk '{print \$9}'\`/log\""   After the job successfully completes, usually after at least 5 minutes, I get the following line on the output:  Finished: SUCCESS   Is there a good way to stop tailing the log at this point? i.e. is there like a tail_until 'some line' my-file.log command?  BONUS: extra credit if you can supply an answer that returns 0 when SUCCESS is matched, 1 when FAILURE is matched, and your solution works on mac! (which i believe is bsd based)