NPBME

Event-driven programming can be overwhelming for beginners, which can make Node.js  difficult to get started with. But don't let that discourage you; In this article, I will teach you some of the basics of  Node.js  and explain why it has become so popular. Asynchronous Programming Node.js  uses a module architecture to simplify the creation of complex applications. Chances are good that you are familiar with asynchronous programming; it is, after all, the "A" in Ajax. Every function in  Node.js  is asynchronous. Therefore, everything that would normally block the thread is instead executed in the background. This is the most important thing to remember about  Node.js . For example, if you are reading a file on the file system, you have to specify a callback function that is executed when the read operation has completed. You are Doing Everything! Node.js  is only an environment - meaning that you have to do everything yourself. There...

A DNA computer is basically a collection of specially selected DNA strands whose combinations will result in the solution to some problem. Technology is currently available both to select the initial strands and to filter the final solution. The promise of DNA computing is massive parallelism: with a given setup and enough DNA, one can potentially solve huge problems by parallel search. This can be much faster than a conventional computer, for which massive parallelism would require large amounts of hardware, not simply more DNA.

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