11 lines
258 B
Markdown
11 lines
258 B
Markdown
### union
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Returns every element that exists in any of the two arrays once.
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Create a `Set` with all values of `a` and `b` and convert to an array.
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```js
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const union = (a, b) => Array.from(new Set([...a, ...b]));
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// union([1,2,3], [4,3,2]) -> [1,2,3,4]
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```
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