object-fp

Library for using funtional programming methods on js objects without mixins

Installation

Install this module through npm.

npm install object-fp

Examples

Methods are not mixed.

  withFP ->
  console.log Object::map # undefined

You can easily destruct keys or/and values.

  withFP ->
    obj = a : 1, b : 2
    #
    keys = obj.map ({val})-> val
    console.log keys # [1, 2]
    #
    vals = obj.map ({key})-> key
    console.log vals # ['a', 'b']

And translate back Array into Object.

  withFP ->
    obj = a : 1, b : 2
    #
    arr = obj.map (tuple)-> tuple
    res = arr.toObject()
    #
    console.log res # {a : 1, b : 2}

Main function

withFP( function() )

Mixin methods to Object and Array prototypes, perform function and unmix methods after.

Methods work only within withFP

Array

• Array.prototype.toObject()

  Translates Array [{key, val}] into Object

Object

Before each method object translates into Array [{key, val}].

• Object.prototype.forEach()

  Calls a function for each element in the array.

• Object.prototype.every()

  Returns true if every element in this array satisfies the provided testing function.

• Object.prototype.some()

  Returns true if at least one element in this array satisfies the provided testing function.

• Object.prototype.filter()

  Creates a new array with all of the elements of this array for which the provided filtering function returns true.

• Object.prototype.map()

  Creates a new array with the results of calling a provided function on every element in this array.

• Object.prototype.reduce()

  Apply a function against an accumulator and each value of the array (from left-to-right) as to reduce it to a single value.

• Object.prototype.reduceRight()

  Apply a function against an accumulator and each value of the array (from right-to-left) as to reduce it to a single value.

License

This module is licensed under the MIT license that can be found in the LICENSE file.