array-map-sorted

Compare two sorted arrays, and map the items of the first map to matched ones.

Install

``sh
$ npm install array-map-sorted
`

Usage

`js
import map from 'array-map-sorted'

const args = [
[
// 1 matches 4
1,
// 2 starts to match from 5 (4 has already been matched), and no matches
2,
// 3 starts to match from 5, and matches 9
3
],
[4, 5, 7, 9],
(a, b) => b % a === 0
]

map(...args)
// [4, undefined, 9]

map(...args, 0)
// [4, 0, 9]

map(...args, 0, (datum, rel) => datum + rel)
// [5, 0, 12]
`

map(data, relative, matcher, defaultValue = undefined, mapper)

- data Array the array to be mapped
- relative Array which each datum of data will be matched with.
- matcher function(datum, rel, datum_i, rel_i): boolean the matcher function
- defaultValue any=undefined if there is no match, the datum will be mapped to defaultValue
- mapper function(datum, rel, datum_i, rel_i): any if there is a match, mapper returns the value which the datum to be mapped into. By default, mapper is (datum, rel) => rel.

Returns Array`

License

MIT