I don't know exactly when, but some of my app icons became blank and some keep toggling between normal and blank. It looks like this:  This is my macOS version:  and since I've having a lot of bugs recently, I'm considering reinstall macOS on my MacBook. Is there a easy way to restore the data and applications back after reinstalling the system? I've made a macOS thumb drive with the newest version but I haven't done this on mac before and I don't know how to restore the data. Thanks!    update:  Here's something strange: I backed up my data, erased my entire SSD, and did a clean install of macOS High Sierra. After that I didn't do any restoring actions. I simply copied my documents back, not even copying the apps. And after I run league of legends (or approximately the same time) on my eternal hard drive, my apps begin to turn into blank like that again :(  Before installation I though it must because I'm using the computer for so long and install so many strange things it becomes junky, but after this installation my problem came back again and it's apparently not about anything about the prior system. I think it have several possibilities: 1. my hard drive got infected by some Mac virus (I haven't seen any before but the strange behavior of my computer makes me think that way); 2. somethings wrong with my computer (most likely the SSD) 3. when I run league on my hard drive somehow it triggers an error. I am suspecting the league because every time I try to run it directly it always says the app is damaged and I must open the package and run :league of legend client" within the app package to launch the game. Does anyone have any ideas about this problem? It is really annoying and any help would be greatly appreciated.
Some of my Apps Icons are changing to a generic app icon, and I have no idea why. Tried to restart the system and nothing. 3 days ago i updated my Skype and then the icon is gone.
How do I suppress the "New release '12.10' available" message? Cannot delete directory with Directory.Delete(path, true) I'm using .NET 3.5, trying to recursively delete a directory using:  Directory.Delete(myPath, true);   My understanding is that this should throw if files are in use or there is a permissions problem, but otherwise it should delete the directory and all of its contents.  However, I occasionally get this:  System.IO.IOException: The directory is not empty.     at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)     at System.IO.Directory.DeleteHelper(String fullPath, String userPath, Boolean recursive)     at System.IO.Directory.Delete(String fullPath, String userPath, Boolean recursive)     ...   I'm not surprised that the method sometimes throws, but I'm surprised to get this particular message when recursive is true.  (I know the directory is not empty.)  Is there a reason I'd see this instead of AccessViolationException? I've always been one to simply use:  List&lt;String&gt; names = new ArrayList&lt;&gt;();   I use the interface as the type name for portability, so that when I ask questions such as these I can rework my code.    When should  be used over  and vice-versa? Add air resistance to projectile motion I am given an initial x and y position and initial velocity and I was asked to graph the trajectory in 1 second intervals.  This is what I have so far:  If $x_0 = 1, v_{0x} = 70, y_0 = 0, v_{0y} = 80, a_x = 0, a_y = -9.8$, and time will be 0,1,2,3... and so on.  Using these equations on every second you can find the plot will be a bell shaped with the highest point being ~ 325 m at about 600 seconds:   $$ x = x0 + (v_{0x})t + 1/2((a_x)t^2) $$ $$ y = y0 + (v_{0y})t + 1/2((a_y)t^2) $$  Usually in physics, we are taught in perfect condition with no air resistance. But what if there was air resistance? How would it affect this problem? How can i add it to my calculations and see what the difference is? With the enthusiastic question of "Who wants ice-cream?", what is the more correct response?         (Not) I.   (Not) me.      Neither response is a sentence. The first response of "(not) I" sounds stuffy, like it should be followed with an indignant sniff. The second sounds like American idiom and acceptable for casual speech.    What do you say? Sequence converges iff $\limsup = \liminf$ I want to prove that a sequence of real numbers $\{s_n\}$ converges to $s$ if and only if $\limsup_{n \to \infty} s_n = \liminf_{n \to \infty} s_n = s$.  Here are my definitions:  For any sequence of real numbers $\{s_n\}$, let $E$ be the set of all subsequential limits of $\{s_n\}$, including possibly $+\infty$ and/or $-\infty$ if any subsequence of $\{s_n\}$ diverges to infinity.  Then $\limsup_{n \to \infty} s_n = \sup E$, and $\liminf_{n \to \infty} s_n = \inf E$.  I know the theorem that a sequence converges to a point if and only if every one of its subsequences converge to that same point, so one direction of this proof is easy:  If $\{s_n\}$ converges to some point $s \in \mathbb{R}$,  then every subsequence of $\{s_n\}$ converges to $s$.  So the set $E$ of every subsequential limit of $\{s_n\}$ consists of the single point $s$, so $$\limsup_{n \to \infty} s_n = \sup \{s\} = s = \inf \{s\} = \liminf_{n \to \infty} s_n$$  But the other direction seems more tricky...  If $\limsup_{n \to \infty} s_n = \liminf_{n \to \infty} s_n = s$, then every convergent subsequence converges to the same point $s$.  Also, there can be no subsequences which diverge to infinity (otherwise $\limsup_{n \to \infty} s_n$ would be $+\infty$, or $\liminf_{n \to \infty} s_n$ would be $-\infty$).  But can't there be subsequences which diverge otherwise?  And wouldn't that throw off the convergence of $\{s_n\}$?    EDIT:  I'd also be willing to accept a solution which makes use of the "Pinching Theorem" (if $a_n \leq s_n \leq b_n$ for every $n \in \mathbb{N}$, and if $a_n \to s$ and $b_n \to s$, then $s_n \to s$). I am using an external application to enter data into a Google Spreadsheet.  This workbook is then referenced by a separate workbook (with the IMPORTRANGE(spreadsheet_key, range_string) function) that manipulates and interprets the data.  My problem is that whenever I personally modify the referenced workbook, the referencing workbook updates just fine, but whenever the external application modifies it, it does not get updated.  I have tried editing the "Spreadsheet settings" so that recalculation is done every minute and on every change.  Furthermore, I have also installed an extension in Google Chrome that auto-refreshes the page every hour.  However, the data does not get re-imported from the referenced workbook.  Even if I copy the formula into a new cell, the data is still not re-imported.  Is there anything that I can do to the referencing workbook to trigger Google Sheets to re-import the data?  Edit: Just to be clear, I currently have one workbook with data entered by an external application in it (call it the "source sheet"), and another workbook with an IMPORTRANGE function in it (call it the "referencing sheet").  The data shown by the IMPORTRANGE function in the "referencing sheet" does not include any data entered by the external application since I last personally edited the "source sheet".  Also, both workbooks are using the new Google Sheets.  Edit: Also, this question is not the same as  because I am using the function given as the solution to that question to import data from a spreadsheet.  The problem is not how to import the data, but rather how to update the source for the data.  My assumption would be that Google would have taken care of this for me, but the data in the "referencing sheet" does not get updated, and the only way I can find to get it to update is to physically go into the "source sheet" and edit it myself. For me the distinction between sites is purely topical. I get that there's a right and a wrong place to ask questions, but I regularly ask questions across a number of sites. They all log me in (in a weird sort of way), and now there's the global inbox.  I've read that there's a feed  and that there's a  but neither of these are what I want.  What I'd like is to have an RSS feed from my global inbox, i.e. to include notification of updates to my public questions, answers, comments. Is this possible? How to get first N elements of a list in C#? I would like to use Linq to query a bus schedule in my project, so that at any time I can get the next 5 bus arrival times. How can I limit my query to the first 5 results?  More generally, how can I take a slice of a list in C#? (In Python I would use mylist[:5] to get the first 5 elements.) While researching my theory that , I noticed that there are surprisingly few posts with zero comments.  Here's what the  looks like:  That graph was generated using the following SQL: select CommentCount, count(*)  from Posts  where CommentCount &lt; 30 group by CommentCount order by CommentCount  The huge distribution disconnect makes me think comments are not being counted correctly. Remote desktop without a password I have an HTPC with a user that has no password and autologin.  I want to be able to connect to it via Remote Desktop without a password, so I can login with the original user. (I don't want to add another user just for the mstsc)  Is there a way of doing that?  The OS is Windows 7, 32bit. Is there a way to do proportional editing only on specific vertices? How to add CSS and JS files on node pages from theme's template.php I am trying to add JavaScript and CSS files to one node type page from my template.php file but it is not working.  Here is my template.php code:   &lt;?php // $Id: template.php,v 1.13 2010/12/14 01:04:27 dries Exp $  function mttheme_preprocess_html(&amp;$variables) {   $node = node_load(arg(1));   if ($node-&gt;type = 'sales_team_page') {     drupal_add_css('misc/jquery.fancybox-1.3.4.css');     drupal_add_js('misc/jquery.mousewheel-3.0.4.pack.js',       array('type' =&gt; 'file', 'scope' =&gt; 'header')     );     drupal_add_js('misc/jquery.fancybox-1.3.4.pack.js',       array('type' =&gt; 'file', 'scope' =&gt; 'header')     );     drupal_add_js('misc/jquery.fancybox-calls.js',       array('type' =&gt; 'file', 'scope' =&gt; 'header')     );   } }   Does anyone know why it is not working? How do I submit .jar file to the ubuntu software center I am writing an app using JAVA Swing for all platforms. After that I want to add this app to Ubuntu Software Center for free Is it possible?   My app is just one *.jar file, its helping to play card games.  I dont know Python language and saying the truth - dont want to learn it now.  What should I do to be able to submit my app? Permanently turn off new Google Maps and go back to old one I found new Google Maps slow, useless (routes with only two points) and wrong. Is there any way, I can turn it off completely and go back to favored old Google Maps? Or is this &mdash; as with everything in Google &mdash; one way trip?  I found  text on this matter, but it seems useless. I have the feeling, that it discuss something completely different. It says about lite indicator in bottom-right corner. I don't have something like that. And provided links, that should switch new Google Maps engine between WebGL and canvas-based, simply doesn't work. All of them opens new window with annoying advertisment about new maps.  I even tried pasing part of URL, they're talking about (force=canvas) into any URL that my new Google Maps uses. Of course without any luck.  So... is there any way, I can get rid of new Google Maps, once and permanently?  UPDATE: In these days (April, 2015) Google , that soon new Google Maps will be the only one available. To my extremely negative surprise, this question will become invalid soon! :( How can I get crash data (stack traces at least) from my Android application? At least when working on my own device being retrieved by cable, but ideally from any instance of my application running on the wild so that I can improve it and make it more solid. If $[\cdot]$ denotes greatest integer function, then what is the value of natural number $n$ satisfying the equation $$[\log_21]+[\log_22]+[\log_23]+\dots[\log_2n]=1538 ?$$   My try:  Note that  $$0+1\times2+2\times2^2+3\times2^3+4\times2^4+5\times2^5+6\times2^6+7\times2^7=1538$$  But the answer is $$n=\sum_{i=0}^72^i=255.$$  How is it derived? Why are date-based hats awarded too early? Copy-paste functionality stops working after about an hour after each reboot on a Windows 7 64-bit system. Running Google Chrome (with gmail and few other tabs open like Calendar, Reader), MS Outlook (which I don't think has anything to do with the problem — I saw it when outlook was off as well), iTunes (9.1.1.12 if it matters).  Would appreciate hints where and what for to look in a registry, and ideas for possible fix.  That is not an Internet Explorer problem (I don't even run it) — it happens in all applications.  Neither Ctrl-C/Ctrl-V nor context menu right-click Copy-Paste (actually, nothing happens on Copy, so there is nothing in a clipboard to Paste) are working. Drag-and-Drop (where supported) continues working though. What happens to the human inside the titan when the titan dies? Just to be clear I'm NOT talking about those who where swallowed.       We know that titans used to be humans and then somehow they transformed into titans.   When they kill a titan it completely Vaporizes and nothing is left. So what happens to the human inside them?     Could it be like when Eren was testing his limits and each time he fused more with the titan body? If so, why could Ymir live in titan form for over 60 years and still transform back into human?