17 lines
530 B
Markdown
17 lines
530 B
Markdown
### longestString
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Takes an array of strings and returns the longest one.
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Uses the [rest operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters)
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to handle arrays as well as an indefinite amount of single arguments.
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Strings are compared using `Array.reduce()`.
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```js
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const longestString = (...strings) => [...strings].reduce((a, b) => a.length > b.length ? a : b);
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```
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```js
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longestString('this', 'is', 'a', 'testcase') // 'testcase'
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longestString(['a', 'ab', 'abc']) // 'abc'
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```
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