What's the benefit of assigning a function to a variable vs just calling the function?
var functionName = function() {} vs function functionName() {}
Is my C1/D visa valid for transit in the US, if I want to go on a vacation to Mexico? Finding the nth non square free number We all know what  numbers are. I was more interested in checking an efficient way to find nth non square free number. How do I configure Nautilus to open at my Documents folder instead of my home folder?  I've scoured this site and found answers instructing users to edit the /usr/share/applications/nautilus.desktop file, replacing %U with the path to the desired default directory. I've edited all the variants of nautilus.desktop in the said directory, but none of the edits has an effect. I've checked all the files after editing them to make sure that I saved the edit effectively, and all look good to me.   I've edited every file to read as follows:  Exec=nautilus --new-window /home/judy/Documents   I've also edited the org.gnome.Nautilus.desktop file, just to be sure, with no joy.   I'm running Ubuntu 15.10.  Note: if I enter nautilus /home/judy/Documents from the command line, Nautilus properly opens in the desired directory.  Is there a simple way that I can configure an icon in the launcher bar to run this command and have the Nautilus icon that looks like a metal file drawer?  Thanks. I'm pulling my hair out over this one. Physically what does warping (of space-time) mean? So there's general relativity and Einstein's field equations that tell us "mass(or equivalently energy) warps space-time, and the warping tells mass how to move", but I'm still having trouble understanding how space (a thing I conceive to be 'empty' or nothingness) can be 'warped'.  After researching books, on-line articles, and this stack exchange itself I can't seem to find any descriptions or discussions that don't immediately resort to jumping into GR and its mathematics to provide a more physical intuitive understanding of what it means to for space to be warped.  Is it space, this empty thing, that's getting warped. Or rather is it some field (Higgs field?) that exists around matter that's getting warped?  Although this question appears similar to  , it's asking if it's empty space that's being warped by matter or rather a field in space that's being warped (the Higgs Field?). The other question and all 10 answers addressing it do not address fields vs. empty space - What's really getting warped? I've been playing Agar for some time now, and lately I've noticed there was a new XP system in Agar. Since then I've been wondering what variables chance the XP gained. I've tried googling it, but with no luck.  I'm looking for how the XP system works in these game modes:   FFA Teams Experimental Norm $N$ on $\Bbb Z[\sqrt d]$ is multiplicative, $N(x)$ prime $\Rightarrow x$ irreducible Do we have different badges in different SE sites Taskbar > File Explorer > Context Menu failing me So I have the latest version of Windows 10, and this is a new PC.  File Explorer is in the taskbar.  When I open the context menu (right-click) on it, I get the list of folders as seen in the picture.  When I right click on any of them, I get the blank black box you see in the picture.  If I click on any of the folders, such as Downloads or Update.  Nothing happens.  They don't open.  The only way to use it is to click on the actual File Explorer icon and then navigate from there.  I've tried uninstalling things (not that I have much installed since it's a fresh install) and I've tried scans, etc.  This only happens with File Explorer.  Everything else works fine.  I can't figure it out. 123.SOGOU.COM - trojan horse in ukui-screensaver So why did the price tank all of a sudden and then came back to normal? What does it mean? What are the big differences among the D&D editions? I've been out of the loop for a while, and I used to play AD&amp;D 2nd ed, but today I find there are a lot of different versions that have fairly different gameplay.   Can anyone summarize the really big differences, the ones (maybe top three?) that are the 'killer features' of the different editions? What makes each edition play differently than the others? Point Renderings Slightly Off in Mathematica Trying to identify a very old short story about aliens colonizing human bodies Don't remember the exact start to the story, but it went something like "walking along a path" or something, and when he hears what sounds like a shotgun blast behind him, he then feels something strike him in the butt. He passes out, and when he awakens, he discovers that the "shotgun blast" was actually a miniature spaceship that exploded and shot miniature aliens into his body. The aliens prove to be very beneficial because they clean up all the toxins and other poisons in his body. They can be transmitted through kissing or sexual activity.  Any help with the name of the story would be greatly appreciated.  Dan Sam Weller in The Pickwick Papers: What accent is Dickens portraying? In Dickens' Pickwick Papers, there's a character "Sam Weller". Weller's dialogue is written somewhat phonetically, I presume, but I'm struggling to understand what accent Dickens is trying to portray. The main peculiarities of Weller's speech are using "v" where there should be a "w" and a "w" when there should be a "v". For example, he says "wery" instead of "very" and "avay" instead of "away". Weller is supposed to be from London, but this doesn't seem like any kind of London accent I've heard. Is this a particular archaic accent?  More importantly, what is Dickens telling us about Sam Weller by having him speak like this? Adding console.log to every function automatically I'd like to write an N-body simulation in which I collide two disk galaxies. To give you an idea of the accuracy I'm trying to achieve, I'm aiming to make this my screensaver at 30fps on my work desktop. Think Euler's method, large epsilons in denominators to prevent blow up, all that lazy stuff.   One place I don't want to be lazy, however, is in the initial construction of the galaxies I'm trying to collide. I want to design a galaxy that will at least sort of hold together by its own gravity until it smash it into another one.   How might I go about selecting the orbital velocities for each of the bodies composing the galaxy? pgfplots: percentages and endvalues in stacked ybar I have two questions regarding the pgfplots package. I have attached the source code I worked on. There are two features I am not able to realize:   I would like to put the total value (sum of the whole stacked bar) on top of the bar, rotated by 90°. For me, it was only possible yet to get the value of each part of the stacked bar by using the nodes near coords command. Additionally, the percentage of each part of the stacked bar as relative to the whole stacked bar should be displayed in the bar, also rotated by 90° (addition equals 100%)   If it is somehow possible, percentages should have only one significant digit, and those below 5% should not be displayed in the bar. I know this is a pretty complex example, but maybe there is one who can solve it.  \documentclass{article}  \usepackage{pgfplots,pgfplotstable}   \usetikzlibrary{pgfplots.groupplots}    \pgfplotsset{compat=1.8}   \pgfplotstableread{  Criterion  ddd     ccc     vvv   (0)    700         750         750   (a)    700         750         750   (b)        1200        750         750       (c)    33      345     345  (d)    34      333     345  (e)    234     344     344   }\Rob   \pgfplotstableread{  Criterion  ddd     ccc     vvv   0      70          75          75    a      70          75          75    b          120         75      75        c      3       34      34  d      3       33      34  e      23      34      34  }\Gab   \begin{document}  \begin{tikzpicture} \begin{groupplot}[group style= {     columns=2,xlabels at=edge bottom,     ylabels at=edge left,     horizontal sep=1cm,group name=plots, }, ymin=0, enlarge x limits={abs=.5}, enlarge y limits={upper,value=0.4},  ylabel=Mon, ylabel style={text height=0.02\textwidth,inner ysep=0pt},  ybar,ybar stacked, major x tick style = transparent,  /pgf/bar shift=0pt, /pgf/bar width=9pt, x tick label style={text height=2ex},    xlabel style={yshift=-2ex},  xticklabels from table={\Rob}{Criterion},  xtick=data,legend columns=-1, legend style={draw=none, /tikz/every even column/.append   style={column sep=5pt}}]  \nextgroupplot[xlabel=Rob, xlabel shift = -7.5cm, legend to name=grouplegend] \pgfplotstableforeachcolumn\Rob\as\col{     \ifnum\pgfplotstablecol=0      \else       \edef\tmp{         \noexpand\addplot table [x expr=\noexpand\coordindex,y=\col] {\noexpand\Rob};         \noexpand\addlegendentry {\col}     }     \tmp     \fi }  \nextgroupplot[xlabel=Gab, xlabel shift = -7.5cm] \pgfplotstableforeachcolumn\Gab\as\col{     \ifnum\pgfplotstablecol=0      \else     \edef\tmp{         \noexpand\addplot table [x expr=\noexpand\coordindex,y=\col] {\noexpand\Gab};     }     \tmp     \fi   }   \end{groupplot}  \draw[dashed] (plots c1r1.south west) -- ++(0,-1.5);   \draw[dashed] (plots c1r1.south east) -- ++(0,-1.5);  \draw[dashed] (plots c2r1.south west) -- ++(0,-1.5);  \draw[dashed] (plots c2r1.south east) -- ++(0,-1.5);  \node at (plots c1r1.south) [inner sep=0pt,anchor=north, yshift=-12ex]     {\ref{grouplegend}};  \end{tikzpicture}  \end{document} Does there exist a set L of pairwise disjoint lines, each line in an axis direction, in $\mathbb{R}^3$ such that their union is equal equal to $\{ x : x \text{ has at least one irrational coordinate}\}$? Computing limit of $(1+1/n)^{n^2}$ Is Canon 60D still a decent camera? I have a Canon 60D, bought it back in 2013. Use it quite a while, but in past two-three years, I lost interest in photography. I will be going on a long trip this summer and would like to take a decent camera with me. Is Canon 60D still a decent one or I will be missing on features and upgrades comparing to the latest versions?  In terms of lenses I own Tamron 24-70 2.8 And Canon 100 2.8 Macro.