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cartographic

v0.0.2

Published

tacit Map tooling

Downloads

5

Readme

Cartographic

Tacit functions for interacting with native JS Maps

API

of

Tacit constructor

import { of } from 'cartographic'

of([['a', 1], ['b', 2]]) === Map([['a', 1], ['b', 2]])

size

Get the size of a Map

import { of, size } from 'cartographic'

const two = of([['a', 1], ['b', 2]])
size(two) === 2

clear

Clear a Map of all records

import { of, clear, size } from 'cartographic'

const two = of([['a', 1], ['b', 2]])
size(clear(two)) === 0

remove

Alias for Map.delete

import { of, remove, size } from 'cartographic'

const two = of([['a', 1], ['b', 2]])
remove('a', two)
size(two) === 1

forEach

Curried tacit Map.forEach, taking the iteration function first

import { of, forEach } from 'cartographic'

const two = of([['a', 1], ['b', 2]])
forEach((value, key) => console.log(`${key}-${value}`))
// prints
// a-1
// b-2

get

Curried tacit Map.get, taking the key first

import {of, get} from 'cartographic'

const two = of([['a', 1], ['b', 2]])

get('a', two) // 1

has

Curried tacit Map.has, taking the key first

import {of, has} from 'cartographic'

const two = of([['a', 1], ['b', 2]])

has('a', two) // true
has('sense', two) // false

set

Curried tacit Map.set, taking the key, then the value, then the Map

import {of, set, get} from 'cartographic'

const two = of([['a', 1], ['b', 2]])

set('c', 3)

console.log(get('c', two)) // 3

map

Curried tacit form of forEach which always returns a value. Takes the transformation function first. Function receives [key, value] as parameter.

import {of, map} from 'cartographic'

const two = of([['a', 1], ['b', 2]])
console.log(map(([k, v]) => `${k}${v}`)) // ['a1', 'b2']

toEntries

Alias for Map.prototype.entries() Returns an iterator

toKeys

Alias for Map.prototype.keys() Returns an iterator

toValues

Alias for Map.prototype.values() Returns an iterator