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What does “Could not find or load main class” mean?

...va developers experience is that their programs fail to run with the error message: Could not find or load main class ... ...
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Which websocket library to use with Node.js? [closed]

...etting the ball rolling with this community wiki answer. Feel free to edit me with your improvements. ws WebSocket server and client for node.js. One of the fastest libraries if not the fastest one. websocket-node WebSocket server and client for node.js websocket-driver-node WebSocket server and c...
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What is the function __construct used for?

...s the right way to define your, well, constructors (in PHP4 you used the name of the class for a constructor). You are not required to define a constructor in your class, but if you wish to pass any parameters on object construction then you need one. An example could go like this: class Database ...
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Batch file to copy files from one folder to another folder

...xcopy /s c:\source d:\target You'd probably want to tweak a few things; some of the options we also add include these: /s/e - recursive copy, including copying empty directories. /v - add this to verify the copy against the original. slower, but for the paranoid. /h - copy system and hidden files...
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HTML inside Twitter Bootstrap popover

I am trying to display HTML inside a bootstrap popover, but somehow it's not working. I found some answers here but it won't work for me. Please let me know if I'm doing something wrong. ...
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Read a file in Node.js

... Use path.join(__dirname, '/start.html'); var fs = require('fs'), path = require('path'), filePath = path.join(__dirname, 'start.html'); fs.readFile(filePath, {encoding: 'utf-8'}, function(err,data){ if (!err) { console....
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Is there a good Valgrind substitute for Windows?

... Some more good commercial tools: Purify Insure++ share answered Jan 5 '09 at 17...
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How to implement an android:background that doesn't stretch?

...re // Now adjust button sizes Button b = (Button) findViewById(R.id.somebutton); int someDimension = 50; //50pixels b.setWidth(someDimension); b.setHeight(someDimension); } share | impro...
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BAT file: Open new cmd window and execute a command in there

... You may already find your answer because it was some time ago you asked. But I tried to do something similar when coding ror. I wanted to run "rails server" in a new cmd window so I don't have to open a new cmd and then find my path again. What I found out was to use the K ...
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Useless use of cat?

... I was not aware of the award until today when some rookie tried to pin the UUOC on me for one of my answers. It was a cat file.txt | grep foo | cut ... | cut .... I gave him a piece of my mind, and only after doing so visited the link he gave me referring to the origins of...