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lists-js

1.0.3 • Public • Published

MaintainabilityTest CoverageBuild Status

js-lists

Install

npm install lists-js

Using

import {cons, head, tail, isEmpty, toString, has, count, reverse, isList, push,
        concat, map, filter, reduce, } from 'lists-js'

const list = cons(1, 2, 3); // (1, 2, 3)
head(list); // 1
tail(list); // (2, 3)
isList(list); // true
isList('text'); // false
push(0, list); // (0, 1, 2, 3)
toString(list); // (1, 2, 3)
has(3, list); // true
count(list); // 3

Documentation

Table of Contents

cons

Make a list

Parameters

  • args ...any

Examples

cons(1, 2, 3); // (1, 2, 3)
cons(); // ()

Returns list

isList

Check if arguments is list

Parameters

  • list

Examples

isList(cons()); // true
isList(cons(1, 2)); // true
isList('text'); // false

Returns boolean

head

Get head element

Parameters

  • list

Examples

head(cons(1, 2)); // 1

Returns any

tail

Get tail element

Parameters

  • list

Examples

tail(cons(1, 2, 3)); // (2, 3)

Returns any

isEmpty

Check if list is empty

Parameters

  • list

Examples

isEmpty(cons(1, 2)); // false
isEmpty(cons()); //true

Returns boolean

push

Add element to list

Parameters

  • element
  • list

Examples

push(3, cons(2, 1)); // (3, 2, 1)

Returns list

toString

Convert list to string

Parameters

  • list

Examples

toString(cons(1, 2, 3)); // (1, 2, 3);
toString(cons(1, cons(2, 3))); // (1, (2, 3));

Returns string

has

Check if list has an element

Parameters

  • value
  • list

Examples

has(1, cons(1, 2)); // true
has(5, cons(1, 2)); // false

Returns boolean

count

Get number of elements in a list

Parameters

  • list

Examples

count(cons(1, 2, 3)); // 3
count(cons()); // 0

Returns int

reverse

Reverse list

Parameters

  • list

Examples

reverse(cons(1, 2, 3)); // (3, 2, 1)

Returns list

concat

Join 2 lists

Parameters

  • list1
  • list2

Examples

concat(cons(1, 2), cons(3, 4)); // (1, 2, 3, 4)

Returns list

map

Map list

Parameters

  • f
  • list

Examples

const list = cons(1, 2, 3);
map(el => el ** 2, list); // (1, 4, 9)

Returns list

filter

Filter list

Parameters

  • f
  • list

Examples

const list = cons(-1, 2, -5, 0, 9);
filter(el => el > 0, list); // (2, 9)

Returns list

reduce

Reduce list

Parameters

  • f
  • acc
  • elements

Examples

reduce((el, acc) => acc + 1, 0, cons(1, 2, 3)); // 3

Returns any

Install

npm i lists-js

DownloadsWeekly Downloads

0

Version

1.0.3

License

ISC

Unpacked Size

98.2 kB

Total Files

27

Last publish

Collaborators

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