What is Node.js? - O'Reilly Radar: "Learning Node might take a little effort, but it's going to pay off. Why? Because you're afforded solutions to your web application problems that require only JavaScript to solve. That means your existing JavaScript expertise comes into play. And when you do need to use PHP or Perl — because it's the right solution for a particular problem — you don't need a PHP or Perl guru. You need to know the basics, and those needs can be expanded when the problem requires expansion. Stretching comes at the behest of new problems, rather than stretching poor solutions thinly."
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