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30-seconds-of-code/snippets/none.md
30secondsofcode b4b0909a1d Travis build: 1674
2018-02-14 11:32:14 +00:00

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### none
Returns `true` if no elements in a collection are truthy, `false` otherwise.
Use `!Array.some(Boolean)` to test if any elements in the collection are truthy.
```js
const none = arr => !arr.some(Boolean);
```
```js
none([0, 0, 0]); // true
```