README
Lotide
A mini clone of the Lodash library.
Purpose
BEWARE: This library was published for learning purposes. It is not intended for use in production-grade software.
This project was created and published by me as part of my learnings at Lighthouse Labs.
Usage
Install it:
npm install @sergerodriguez/lotide
Require it:
const _ = require('@sergerodriguez/lotide');
Call it:
const results = _.tail([1, 2, 3]) // => [2, 3]
Documentation
The following functions are currently implemented:
assertArraysEqual()
: takes in two arrays and prints an appropriate message to the console telling us if they match or not.assertEqual()
: the function compares the two values it takes in and prints out a message telling us if they match or not.assertObjectsEqual()
: take in two objects and prints an appropriate message to the console telling us if they match or not.countLetters()
: returns an object where each unique character encountered is a property of the object and the value for that property/key should be the number of occurrences for that character.countOnly()
: takes in a collection of items and returns counts for a specific subset of those items.eqArrays()
: takes in two arrays and returns true or false, based on a perfect match.eqObjects()
: takes in two objects and returns true or false, based on a perfect match.findKey()
: takes in an object and a callback. It should scan the object and return the first key for which the callback returns a truthy value. If no key is found, then it should return undefined.findKeyByValue()
: takes in an object and a value. It should scan the object and return the first key which contains the given value. If no key with that given value is found, then it should return undefined.flatten()
: takes in an array of arrays and returns a "flattened" version of the array.head()
: returns the first item in an array.letterPositions()
: returns all the indices (zero-based positions) in the string where each character is found.map()
: returns a new array based on the results of the callback function.middle()
: takes in an array and return the middle-most element(s) of the given array.tail()
: returns the "tail" of an array: everything except for the first item (head) of the provided array.takeUntil()
:returns a "slice of the array with elements taken from the beginning." It should keep going until the callback/predicate returns a truthy value.without()
: returns a subset of a given array, removing unwanted elements.