👟 rdash

The recreational javascript utilities.

Contribute Guide

1. Fork from develop branch.
2. Make a PR to develop branch.

To install

Run the npm install command first, it will install in your local machine all the required modules.

npm install

To build

npm run build.

Run the Examples

Next, you need to install a web server to serve our app. We suggest to use simplehttpserver.

npm install simplehttpserver -g    
simplehttpserver .

To test

npm test

All test should be 100% passed.

To use

const { uniq } = require('./rdash')
const result = uniq([1,1,2,2,3,4,5])
console.log(result)

Output:
1,2,3,4,5

contains([arr], item)

const { contains } = require('./rdash')
const result = contains([1,2,3,4,5], 3)
console.log(result)

Output:
true

cumSum([arr])

const { cumSum } = require('./rdash')
const result = cumSum([1,2,3,4,5])
console.log(result)

Output:
Array [ 1, 3, 6, 10, 15 ]

groupBySumAt([arr], byKey, sumAt)

const { groupBySumAt } = require('./rdash')
var items = [
  {key:'key1', value:10},
  {key:'key2', value:20},
  {key:'key3', value:30},
  {key:'key1', value:40}
]
const result = groupBySumAt(items,'key','value')
console.log(result)

Output:
[{"key":"key1","value":50},{"key":"key2","value":20},{"key":"key3","value":30}]

sort([arr])

const { sort } = require('./rdash')
const result = sort([10,8,2,1,7,5])
console.log(result)

Output:
1,2,5,7,8,10

uniq([arr])

const { uniq } = require('./rdash')
const result = uniq([1,1,2,2,3,4,5])
console.log(result)

Output:
1,2,3,4,5

duplicates

const { duplicates } = require('./rdash')
const result = duplicates([1,8,2,1,7,5,2])
console.log(result)

Output:
[1,2]

factorial(number)

const { factorial } = require('./rdash')
const result = factorial(3)
console.log(result)

Output:
6

isPrime(number)

const { isPrime } = require('./rdash')
const result = isPrime(3)
console.log(result)

Output:
true

avg([number])

const { avg } = require('./rdash')
const result = avg([5, 10, 15, 20, 25])
console.log(result)

Output:
15

isPalindrome(string)

const { isPalindrome } = require('./rdash')
console.log(isPalindrome('madam'))

Output:
true

debounce(function)