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What is your most productive shortcut with Vim?

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Node.js EACCES error when listening on most ports

...ng out an app (hopefully to run on heroku, but am having issues locally as well). It's giving me an EACCES error when it runs http.Server.listen() - but it only occurs on some ports. ...
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What's the difference between a continuation and a callback?

I've been browsing all over the web in search of enlightenment about continuations, and it's mind boggling how the simplest of explanations can so utterly confound a JavaScript programmer like myself. This is especially true when most articles explain continuations with code in Scheme or use monads....
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Stack smashing detected

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When to use EntityManager.find() vs EntityManager.getReference() with JPA

I have come across a situation (which I think is weird but is possibly quite normal) where I use the EntityManager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table. ...
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Is there a limit on how much JSON can hold?

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How to copy an object in Objective-C

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Difference between “module.exports” and “exports” in the CommonJs Module System

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How can prepared statements protect from SQL injection attacks?

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String's Maximum length in Java - calling length() method

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