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Update reducedFilter.md

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Angelos Chalaris
2018-01-01 17:05:25 +02:00
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snippets/reducedFilter.md
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Filter an array of objects based on a condition while also filtering out unspecified keys. Filter an array of objects based on a condition while also filtering out unspecified keys.
Use `Array.filter()` to filter the array based on the predicate `fn` so that it returns the objects for Use `Array.filter()` to filter the array based on the predicate `fn` so that it returns the objects for which the condition returned a truthy value.
which the condition returned a truthy value. On the filtered array, use `Array.map()` to return the new object using `Array.reduce()` to filter out the keys which were not supplied as the `keys` argument. On the filtered array, use `Array.map()` to return the new object using `Array.reduce()` to filter out the keys which were not supplied as the `keys` argument.
```js ```js
const reducedFilter = (data, keys, fn) => const reducedFilter = (data, keys, fn) =>