14 lines
394 B
Markdown
14 lines
394 B
Markdown
### differenceWith
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Filters out all values from an array for which the comparator function does not return `true`.
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Use `Array.filter()` and `Array.find()` to find the appropriate values.
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```js
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const differenceWith = (arr, val, comp) => arr.filter(a => !val.find(b => comp(a, b)));
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```
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```js
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differenceWith([1, 1.2, 1.5, 3], [1.9, 3], (a,b) => Math.round(a) == Math.round(b)) // [1, 1.2]
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```
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