I keep reading about ping/pong messages in websockets to keep the connection alive, but I'm not sure what they are. Is it a distinct frame type? (I don't see any methods on a javascript WebSocket object in chrome related to ping-pong). Or is it just a design pattern (e.g. I literally send "ping" o...

I have a template function with one argument. I have to instantiate that function without calling that function means explicitly I have to instantiate. ...

I use the shortcut w to move the cursor one word right. Is there a shortcut to move a word left? 5 Answers ...

I have a directory gitrepo1 . This directory is a git repository. 4 Answers 4 ...

I have two exe files in the same folder, I can run exe2 from a button in exe1. Today I was observing a customer over a remote (terminal services) session and exe2 failed to run 'File not found' error, yet exe1 was in the same directory when we checked. So should I be using AppDomain.CurrentDomain.B...

I have a large collection of 300 question objects in a database test . I can interact with this collection easily through MongoDB's interactive shell; however, when I try to get the collection through Mongoose in an express.js application I get an empty array. ...

What does an lambda expression like _=> expr mean? 5 Answers 5 ...

I cannot figure out why this is giving me the error, The actual string I am trying to insert is 74 chars long, it's: "/gifs/epic-fail-photos-there-i-fixed-it-aww-man-the-tire-pressures-low.gif" ...

So when I set up my entitlements in my iPhone app project, I create a new Entitlements.plist, and set the value of get-task-allow to false. But why? What does this key represent? ...

Apache Karaf is a sub project of Apache Felix . It is defined as "a lightweight OSGi container". 3 Answers ...