What do you call someone who doesn't know their worth or is under-performing their potential?
One who has potential, but never gives the effort to show it.   What would be the best word or words that match this description?
I would very much like that the the appendix sections of the Table of Contents doesn't have a section numbers, dots, and page numbers. If I do the following  \documentclass{article} \usepackage{tocloft} \addtocontents{toc}{\cftpagenumbersoff{section}} \renewcommand{\cftdot}{} \begin{document} \tableofcontents \newpage \section{Appendix} \section*{Another Letter} \addcontentsline{toc}{section}{Another Letter} \end{document}   then the section "Another Letter" is left aligned, so it doesn't look like the  others.  Question  Is it possible to have "Another Letter" styled the same way as normal TOC entries, but just without section number, dots, and page number? Prove or disprove: $S_{10} = \langle (1,3),(1,2, ... ,10) \rangle$ Can "whatever" be split into two words? I tend to write, "say whatever they want", but I'm always tempted to write "say what ever they want". Is it acceptable to split the word in this context? How to fill a mesh with solid color What's the origin of the flattened X that appears when of a small (but powerfull enough) light is reflected in our non-powered TV screen? Compute $E(X\mid X+Y)$ for independent random variables $X$ and $Y$ with standard exponential distributions How can I respawn the Ender Dragon? DES-X , computation load and storage Make bash exit != 0 when called by AWK and interrupted with ^C I'm having an issue with the following piece of (G)AWK script:  do {     ... } while (system("sleep 10"))   My intention is to break the loop when the user presses ^C during the sleep, but it's not working.  I believe the problem is that Bash exits with 0 when interrupted with ^C, at least when it's executed by AWK's system():  $ awk 'BEGIN { print "\n" system("sleep 2") }' (let the sleep complete) 0      $ awk 'BEGIN { print "\n" system("sleep 2") }' ^C 0   Why is it so?   Is this a bug in Bash or in (G)AWK?  Is there a simple solution that doesn't involve complicated Bash-specific syntax like trap?  The best I could come up with is this:  do {     ... } while (42 == system("sleep 10 &amp;&amp; exit 42"))   which still looks like a kludge to me. Did the law of conservation of energy apply to the earliest moments of the Big Bang? If so, what theoretical physics supports this?   I hear that Einstein's theory of relativity disputes the law of conservation of energy- so does that mean the law is false, or only some aspect of it? What are the mechanics by which Time Dilation and Length Contraction occur? Does a photon in vacuum have a rest frame? Quite a few of the questions given on this site mention a photon in vacuum having a rest frame such as it having a zero mass in its rest frame. I find this contradictory since photons must travel at the speed of light in all frames according to special relativity.  Does a photon in vacuum have a rest frame? Share a Folder between two Local Users I and my brother have User Accounts on this machine. I want to share the Documents directory with him.  Is there a STRAIGHTFORWARD way to do it?  I am not a power user so I am looking for a way to do this using nautilus, rather than a script or a way that requires creating symlinks.  I can download an application if i have to.  Last time I wanted to do this I just copied the contents to /home for both of us to use.  Something I can do in System Settings would be appreciated How could I execute a script in Shell when a shortcut key is pressed.   Essentially what I need is when a shortcut key is pressed the script should read from a file and display that content in the terminal. Display bare HTML from hook_menu() What would be the cleanest way to route URLs to functions and return only the HTML output from those functions (a.k.a. the menu callback)?  If I use hook_menu() the string that's returned will be the HTML within the rest of the site. I want the page to display only the string returned from the menu callback.  Should I use drupal_set_header() in the same way drupal_json() does? Is this not inefficient having fully bootstrapped Drupal, and then changing the header at the last minute?  I want the fastest code path possible since this is going to be for widgets on external sites.  I could start with a standalone .php file and bootstrap what I need but the hook_menu routing is nice.    How should you do this? How can I use JUnit4 idiomatically to test that some code throws an exception?  While I can certainly do something like this:  @Test public void testFooThrowsIndexOutOfBoundsException() {   boolean thrown = false;    try {     foo.doStuff();   } catch (IndexOutOfBoundsException e) {     thrown = true;   }    assertTrue(thrown); }   I recall that there is an annotation or an Assert.xyz or something that is far less kludgy and far more in-the-spirit of JUnit for these sorts of situations. the root of $N$th transpose matrix For $n=3,$ $L$ matrix is as below:  $$ \left[\begin{matrix} 1&amp;0&amp;0\\ -1&amp;1&amp;0\\ -0.5&amp;-0.5&amp;1\\ \end{matrix}\right] $$  for $n=4$ we have:  $$ \left[\begin{matrix} 1&amp;0&amp;0&amp;0\\ -1&amp;1&amp;0&amp;0\\ -0.5&amp;-0.5&amp;1&amp;0\\ -1/3&amp;-1/3&amp;-1/3&amp;1 \end{matrix} \right] $$  and for $N$th we have: $$ \left[ \begin{matrix} 1&amp;0&amp;0&amp;0&amp;\cdots&amp;0&amp;0\\ -1&amp;1&amp;0&amp;0&amp;\cdots&amp;0&amp;0\\ -0.5&amp;-0.5&amp;1&amp;0&amp;\cdots&amp;0&amp;0\\ \vdots&amp;\vdots&amp;\vdots&amp;\vdots&amp; &amp; \vdots&amp;\vdots\\ -1/(N-2)&amp;-1/(N-2)&amp;-1/(N-2)&amp;-1/(N-2)&amp;\cdots&amp;1&amp;0\\ -1/(N-1)&amp;-1/(N-1)&amp;-1/(N-1)&amp;-1/(N-1)&amp;\cdots&amp;-1/(N-1)&amp;1 \end{matrix} \right] $$  How to get the roots (eigenvalues) of the $N$th order of the $L+L^T$ matrix? is there a specific logic between the roots of this matrix? I am getting error:     The argument 2 of the "JSON_VALUE or JSON_QUERY" must be a string literal   ...while trying to pass variable as parameter to JSON_QUERY function. Please help me to resolve it.  DECLARE @cnt INT = 1; DECLARE @cnt_total INT = 1; DECLARE @json NVARCHAR(MAX); DECLARE @json1 NVARCHAR(MAX); declare @str  VARCHAR(200);  WHILE @cnt &lt;= 10 BEGIN     set @str = '$.Seasons[0].Products['+convert(varchar,@cnt)+'].ProductChannels';     set @str = char(39) +@str+ char(39);     PRINT @STR     select @json = json_query(jfile,@STR) from Import.tstjson; --MORE CODE         SET @cnt = @cnt + 1; END   Sample data:  {   "Seasons": [     {       "Season": "12321231",       "Products": [         {           "ProductId": "211",           "ProductChannels": [             {               "ChannelId": 1,               "WeekQuantities": []             }           ],           "ccc": 3,           "Tttt": 4         }       ]     }   ] } shell: keep trailing newlines ('\n') in command substitution I want to be able to capture the exact output of a command substitution, including the trailing new line characters.  I realise that they are stripped by default, so some manipulation may be required to keep them, and I want to keep the original exit code.  For example, given a command with a variable number of trailing newlines and exit code:  f(){ for i in $(seq "$((RANDOM % 3))"); do echo; done; return $((RANDOM % 256));} export -f f   I want to run something like:  exact_output f   And have the output be:  Output: $'\n\n' Exit: 5   I'm interested in both bash and POSIX sh. SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW