What are the programming skills of web

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You should use functions like map, filter, and reduce instead of writing for or while loops. This is recommended because:

Loops make it easy to produce code side effects that turn code logic into spaghetti and clutter.

When you try to do more than one thing at a time, the cycle can cause you pain.

Functional programming prevents code from producing as many side effects as cold medicine. It forces you to do one thing at a time and is much more readable than looping.

Loops, like pointers, are a simple programming method. They're very useful for some critical code, but I think I'd say very few of us are working on graphics drivers.

Let's cut to the chase--here's a comparison of JavaScript programs. First, the old circular version:

const cats = ['Antonio', 'Squid', 'Tornado', 'Avocado', 'Barnacles', 'Abroteus']; const stringStartsWithA = x => x[0].toLowerCase() === 'a'; const catsWhoseNameStartsWithA = []; for (let i = 0; i

< cats.length; i++) { if (stringStartsWithA(cats[i])) { catsWhoseNameStartsWithA.push(cats[i]); } } console.log(catsWhoseNameStartsWithA); // Output: // ["Antonio", "Avocado", "Abroteus"] 下面是新式的函数式编程： const cats = ['Antonio', 'Squid', 'Tornado', 'Avocado', 'Barnacles', 'Abroteus']; const stringStartsWithA = x =>

x[0].toLowerCase() === 'a'; const catsWhoseNameStartsWithA = cats.filter(stringStartsWithA); console.log(catsWhoseNameStartsWithA); // Output: // ["Antonio", "Avocado", "Abroteus"]

Of course, this is a simple example, and probably a good use case for filters. Still, we turned 5 lines of messy code into... 0 lines? In *** examples, we have used a line of code to declare arrays.

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