eclipse does not open my Javafx project
What is a NullPointerException, and how do I fix it?
What's the best way to get the last N elements of a Perl array? What are the differences between consumer grade SSDs and the much more expensive enterprise SSDs? I am in need of a terabyte or so of storage space for Lucene indices on a testing server.  I'm having a hard time differentiating between disks like the  for about $450 vs  of dollars.  What concerns should I have regarding the 840 evo, and what should I be looking for?  This server will be used strictly for in-house testing purposes by our development team and will have to put up with periodic load testing. How to use a decimal range() step value? Is it feasible to transform each variable differently while doing multiple regression I have a dataset with 10 variables ...is it feasible to transform each variable differently while doing multiple regression...  for example new_V1 = log(v1)  New_V2= V2^2  New_V3= 1/V3  Likewise differently for different variables and then applying multiple regression? Mountain Bike on Paved Roads I'm an occasional biker. I bought a mountain bike (nothing fancy) with the idea that I might use it off-road or on mountain trails (of which there are many here in Calgary). However, since I've bought it I've done nothing but bike in the city on streets and paved bike trails.  Is there anything worth doing to my bike to convert it to something more suited to urban biking? In particular, the tires have me wondering; they have large rubber off-roading lugs that surely aren't doing me any favors on pavement. I'm not looking to spend a tons of money on a retrofit, but will do so if its worthwhile. I want to say:  Please, check out our handbook/knowledge base.  ...but it can be interpreted in two ways:  Please, check out our (handbook/knowledge) base. — as if there is a &quot;handbook base&quot; and a knowledge base. Please, check out our handbook/(knowledge base). — the meaning I'm after.  I thought that maybe I should put spaces around the slash to better separate the two choices:  Please, check out our handbook / knowledge base.  ...but I'm not sure that does it. I checked out  on the topic and it didn't answer my question.  Is it possible to convey the right meaning with a slash, or should I just avoid it altogether? How do you use a variable in a regular expression? I would like to create a String.replaceAll() method in JavaScript and I'm thinking that using a regex would be most terse way to do it.  However, I can't figure out how to pass a variable in to a regex.  I can do this already which will replace all the instances of "B" with "A".  "ABABAB".replace(/B/g, "A");   But I want to do something like this:  String.prototype.replaceAll = function(replaceThis, withThis) {     this.replace(/replaceThis/g, withThis); };   But obviously this will only replace the text "replaceThis"...so how do I pass this variable in to my regex string? Is the following layout possible with the subfigure package? On my Amazing 2GB EeePC Surf, I have no more space left!  This is quite normal, and it happens every now and then. Just delete a few large, unneeded files and everything should be good, right?  So I go and find a 2MB file in /tmp, and rm -rf it. Check free space again, and -- still nothing?!  I had to remove about 30MB of files before it registered some free space.  Now, my question is, what's up with this strange behaviour? I read on  that Ubuntu will no longer use the familiar file size units we all know by now (kB, MB, GB, TB) and switch to a different IEC standard (KiB, MiB, GiB, TiB). If this is true, I would like to know what's the reasoning behind this change, and the impact (if any) this change has, especially with multiplatform applications or applications run with Wine. How to copy files that have too long of a filepath in Windows? Show that every uncountable set of real numbers has a point of accumulation. Let $\{f_n\}$ be a sequence of analytic functions on a region $\Omega$ with $|f_n| ≤ 1$ on $\Omega$. Let K be compact and contained in $\Omega$. Suppose $\{f_n\}$ converges at infinitely many points in K. Then is it true or false that $\{f_n\}$ necessarily converges at every point of $\Omega$? I've updated my Ubuntu to 19.10 couple of weeks ago and on installation system suggests to change or add shortcut for input source selection despite one was already defined previously. I've added ctrl+shift shortcut and just realized that it somehow overlapped any other ctrl+shift+something shortcuts globally, i.e. when I want to open new window in vscode, it opens new tab and it looks like system doesn't see the shift button press.   I tried to search this combination in shortcuts settings, but it's just not there. In hearthstone, you receive one quest per day, barring unique quests. What I'm wondering is when exactly does a new day start? I assume it's at a specific global time, so I'm looking for a time in GMT or UTC.  I did find out you need to exit the game and come back to receive new quests, but I'm hoping someone actually knows when i have to do that. I use \includegraphics command to insert image to the document. But how can I add a border around this image w/o any margin between border lines and image? It seems to be very easy, but I can't find it in the documentation. I'm currently building a town in Minecraft Pocket Edition and I'm wondering how many blocks long and how many blocks wide the world is. What is the recommended way to encrypt user passwords in a database? How can I prevent iPhoto/Photos/Image Capture from launching everytime I plug in my iPad/iPhone? How can I compute the following limit, and is there a general method to resolve problems of this type?  $$\lim_{x\to\infty}x\left[\left(1+\frac{1}{x}\right)^x-e\right]$$