Working with Map, Set, iterables

sift-r 📥 docs

import { sift } from 'sift-r'

Working with Map, Set, iterables

sift()

sift(new Set(...), ...value-patterns)

import { sift } from 'sift-r'
import { lt } from 'match-iz'

const [oneYearOlds, lessThan40, theRest] = sift(
  new Set([
    { user: 'barney', age: 36, active: false },
    { user: 'fred', age: 40, active: true },
    { user: 'pebbles', age: 1, active: false }
  ]),
  { age: 1, active: false },
  { age: lt(40) }
)

// oneYearOlds ===
//   new Set([
//     { user: 'pebbles', age: 1, active: false }
//   ])

// lessThan40 ===
//   new Set([
//     { user: 'barney', age: 36, active: false }
//   ])

// theRest ===
//   new Set([
//     { user: 'fred', age: 40, active: true }
//   ])

sift(new Map(...), ...value-patterns)

import { sift } from 'sift-r'
import { lt } from 'match-iz'

const [oneYearOlds, lessThan40, theRest] = sift(
  new Map([
    [0, { user: 'barney', age: 36, active: false }],
    [1, { user: 'fred', age: 40, active: true }],
    [2, { user: 'pebbles', age: 1, active: false }]
  ]),
  { age: 1, active: false },
  { age: lt(40) }
)

// oneYearOlds ===
//   new Map([
//     [2, { user: 'pebbles', age: 1, active: false }]
//   ])

// lessThan40 ===
//   new Map([
//     [0, { user: 'barney', age: 36, active: false }]
//   ])

// theRest ===
//   new Map([
//     [1, { user: 'fred', age: 40, active: true }]
//   ])

sift(iterable, ...value-patterns)

import { sift } from 'sift-r'
import { lt } from 'match-iz'

function* flintstones() {
  yield { user: 'barney', age: 36, active: false }
  yield { user: 'fred', age: 40, active: true }
  yield { user: 'pebbles', age: 1, active: false }
}

const [oneYearOlds, lessThan40, theRest] = sift(
  flintstones(),
  { age: 1, active: false },
  { age: lt(40) }
)

// oneYearOlds ===
//   [{ user: 'pebbles', age: 1, active: false }]

// lessThan40 ===
//   [{ user: 'barney', age: 36, active: false }]

// theRest ===
//   [{ user: 'fred', age: 40, active: true }]