How to solve unassigned 'out' parameter error?
Difference between ref and out parameters in .NET
Definition of the Infinite Cartesian Product Why are swap partitions discouraged on SSD drives, are they harmful? I often read that one should not place swap partitions on a SSD drive, as this may harm the device. Is this true? Can you please explain the reason to me?  Because I otherwise would have thought that placing swap on an SSD is the best choice, as it's much faster than HDDs and therefore swapping RAM contents to the SSD is not as slow as it would be with the HDD... doing comparison if else in JasperReports Is it a good concept to use multiple inheritance or can I do other things instead? I want players to be able to click text to run an OP command even if that player is not an OP. For example something like:  Console: Do you want to enable Fly? [If you do, Please click here]  *Player1 clicks that text*  Console: /fly Player1   Is something like this possible? When is it appropriate to use the original pronunciation of a foreign word versus the English pronunciation? When reading to an audience, or speaking in conversation, when is it appropriate to use the original pronunciation of a foreign word versus the English pronunciation (assuming you know the appropriate pronunciation for it)? Is it considered rude, or condescending? Or is it considered a mark of being knowledgeable?  One of the things to consider are place names. When referring to Paris, France, should it be pronounced with the silent 'S' as the French would say it, or with the 'S'? Should Hiroshima be pronounced as a Japanese speaker would pronounce it slightly more emphasis on RO, rather than the SHI? Should Mount Pinatubo be pronounced as a Filipino speaker would pronounce it with shorter stronger vowels, or the longer vowels? (e.g. Pi as is 'pick' rather than 'pea'.) Should Wichita be pronounces as the original "shi" rather than the modern "chi"?  Pronounce pesos or sombrero as a Spanish speaker 'eh' or the English 'ay'?  (I can't think of other common words right now that aren't words taken from other languages like hurricane, boondocks, tornado, etc. which I think have (correctly) changed to English pronunciations.) What is Chromatic Aberration? What is Chromatic Aberration? Is it a physical part of the lens, or just an optical illusion? I'm new to Ubuntu, it looks like it is better than Windows. Last day I tried to install Kget (the download manager) but during the process my computer suddenly stopped working. So I had to switch it off. After I logged into Ubuntu again I can't install any program. The Ubuntu Software Center says:  Items cannot be installed or removed until package catalog is repaired. Do you want to repair it now?   After I clicked repair it says (after few seconds):  Package operation fails - The installation or removal of a software package failed   I've tried several times, but the same problem occurred. Can anyone tell me a solution for this problem? When we implement the Always Encrypted feature in SQL Server 2016, do the .mdf files, .ldf files and .bak files get encrypted as well?  I would like to know if the data/log/backup files gets encrypted or not. Transferring domain to new host, but keeping email on old host I'm helping out a friend manage his website. Said friend has a domain, website.com, which I am transferring from his old host (OLD) to his new host (NEW), but OLD does not provide email services (or, at least, not intuitively). As a result, he wants both:   To host the website at NEW To use the email servers at OLD so he can continue using the email accounts he set up there.   The move from OLD to NEW has taken place, and I have updated the DNS records so they no longer point at ns1.old.com, and now point instead at ns1.new.com, and so on.  But having searched around a bit for the solution to the email aspect, I'm a little uncertain. I've updated the MX record at NEW to point back to ns1.OLD.com, but emails are still failing - and I'm sure the reason for this is obvious, but I'm not quite grasping what I need to do here.  As I understand it, the process ought to be as follows:   Mail sent to account@website.com website.com routes the mail to the host at NEW NEW then uses the new MX record to rout it to the servers at OLD Hey presto, the email should appear in the email inbox at account@website.com at OLD.   But this isn't happening. I get a 550 error telling me to turn on SMTP authentication, which I've read is a sure sign that I've got the MX configuration wrong. Any assistance on this would be really greatly appreciated.  tl;dr: Friend wants to move site hosting to NEW, but keep email hosting at OLD - I don't know what to do with MX and nameservers and so on to make this happen. Are there 'stack' sites for Mac or Windows? Is it possible to load a raster file (e.g. geotiff or erdas img) directly into a Leaflet map? If so, can you guide me to the correct documentation or method to do this? I am trying to do this with the imageOverlay() function in Leaflet currently.   var imageUrl = 'http://localhost/test/my_raster.tif',         imageBounds = [[30.430224, -87.193133], [30.435867, -87.185944]];         L.imageOverlay(imageUrl, imageBounds).addTo(map);    I am new to Leaflet. I gave my friend  as a brainteaser; while her attempted solution didn't work, it raised an interesting question.  I flip a fair coin repeatedly and record the results.  I stop as soon as the number of heads is equal to twice the number of tails (for example, I will stop after seeing HHT or THTHHH or TTTHHHHHH).  What's the probability that I never stop?  I've tried to just compute the answer directly, but the terms got ugly pretty quickly.  I'm hoping for a hint towards a slick solution, but I will keep trying to brute force an answer in the meantime. The usual explanation for warm fluids rising past cooler ones is that the warmer fluid has a lower density.  I'm trying to understand what this looks like at a molecular scale.  The density seems to be a large-scale phenomenon, and I don't understand how it can affect whether a particular molecule rises or falls.  Consider a cylinder of fluid that is being heated at the bottom.  The molecules at the bottom have a higher average energy.  How does this result in the tendency of the warmer molecules at the bottom to move upwards past the cooler ones? If the big bang was the birth of everything, and the big bang was an event in the sense that it had a location and a time (time 0), wouldn't that mean that our universe has a center?  Where was the big bang? What is there now? Are we moving away from the center still? Are these even valid questions? How to enable/disable a specific graphic card? Let $G = (\mathbb{C} - \{0\}, \cdot)$, a subgroup $U = \{x+yi \mid x^2 + y^2 = 1\}$. Use the Fundamental Theorem to show that $G/(\mathbb{R}_{&gt; 0},\cdot)$ is isomorphic to $U$ where $\mathbb{R}_{&gt; 0}$ denotes the positive reals.  I am struggling to find the correct mapping from $G$ to $U$ that results in the the kernel being the nonnegative reals under multiplication. I'm hoping to get help with this mapping then I can show it is a homomorphism and onto and can use the Fundamental Theorem. How do I convert a light circuit with a single pole switch to use two 3-way switches? I have a box in the hall which includes a 3-way switch (with another switch at the other end of the hall), a single pole switch to the garage lights and a single pole switch to the exterior lights on the garage.  The single pole switch to the garage is wired with a 3 wire plus ground. The white and black wires feed the garage lights from the switch and the red wire feeds the garage ceiling outlets and is hot all the time.  In the garage I would like to add a 3-way switch for the garage lights and another 3-way switch for the exterior garage lights.  In other words I would like to be able to turn on both of those light locations from both the inside hall and the garage as well. I know that I will of course have to replace the existing single pole switches in the hall with 3-way switches and add a junction box in the garage with 2 3-way switches in it.  The thing that I don't know is what wiring connections I need to make.  Can you help? In Minecraft, you can only build up to a certain height limit (which is something around 256). However, if a player uses mods/hacks to go above the limit (Or simply goes into Creative Mode), then they can go above the height limit.  How high is the player height limit in Minecraft? Is there even a limit to it? I've tried testing this myself, but my thumb started hurting when I reached Y= 1000. Finding net magnetic and electric force on charged particle This is from my textbook, it is not an assigned problem, but I want to understand.   It says:      Consider the situation in the figure, in which there is a uniform electric field in the x direction and a uniform magnetic field in the y direction. For each example of a proton at rest or moving in the x, y, or z direction, what is the direction of the net electric and magnetic force on the proton at this instant?   I believe I need to use the equation   $$ F_{net}=(q\overrightarrow{E})+q(\overrightarrow{v} \times \overrightarrow{B}) $$  But I'm not sure exactly how. We've just started to learn about this, and I want to get a head start. Could anyone put me on the right track?