80 lines
2.1 KiB
Markdown
80 lines
2.1 KiB
Markdown
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---
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id: 587d7b8d367417b2b2512b5b
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title: Learn About Functional Programming
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challengeType: 1
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videoUrl: ''
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localeTitle: 了解功能编程
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---
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## Description
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<section id="description">功能编程是一种编程风格，其中解决方案是简单，独立的功能，在功能范围之外没有任何副作用。 <code>INPUT -> PROCESS -> OUTPUT</code>功能编程是关于：1）隔离函数 - 不依赖于程序的状态，其中包括可能发生变化的全局变量2）纯函数 - 相同的输入总是给出相同的输出3）副作用有限的功能 - 对功能外部程序状态的任何改变或突变都要仔细控制</section>
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## Instructions
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<section id="instructions"> freeCodeCamp的成员碰巧爱茶。在代码编辑器中，已经为您定义了<code>prepareTea</code>和<code>getTea</code>函数。调用<code>getTea</code>函数为团队获取40杯茶，并将它们存储在<code>tea4TeamFCC</code>变量中。 </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>tea4TeamFCC</code>变量应该为团队提供40杯茶。
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testString: 'assert(tea4TeamFCC.length === 40, "The <code>tea4TeamFCC</code> variable should hold 40 cups of tea for the team.");'
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- text: <code>tea4TeamFCC</code>变量应该拿着一杯绿茶。
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testString: 'assert(tea4TeamFCC[0] === "greenTea", "The <code>tea4TeamFCC</code> variable should hold cups of green tea.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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/**
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* A long process to prepare tea.
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* @return {string} A cup of tea.
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**/
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const prepareTea = () => 'greenTea';
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/**
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* Get given number of cups of tea.
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* @param {number} numOfCups Number of required cups of tea.
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* @return {Array<string>} Given amount of tea cups.
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**/
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const getTea = (numOfCups) => {
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const teaCups = [];
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for(let cups = 1; cups <= numOfCups; cups += 1) {
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const teaCup = prepareTea();
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teaCups.push(teaCup);
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}
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return teaCups;
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};
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// Add your code below this line
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const tea4TeamFCC = null; // :(
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// Add your code above this line
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console.log(tea4TeamFCC);
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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