@dbcolturato/lotide v1.0.0

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 @dbcolturato/lotide

Require it:

const _ = require('@dbcolturato/lotide');

Call it:

const results = _.tail([1, 2, 3]) // => [2, 3]

Documentation

The following functions are currently implemented:

• assertArraysEqual(...): take in two arrays and console.log an appropriate message to the console.
• assertEqual(...): compare the two values it takes in and print out a message telling us if they match or not.
• assertObjectEqual(...): take in two objects and console.log an appropriate message to the console.
• countLetters(...): take in a sentence (as a string) and then return a count of each of the letters in that sentence.
• countOnly(...): take in a collection of items and return counts for a specific subset of those items.
• eqArrays(...): take in two arrays and returns true or false, based on a perfect match.
• eqObjects(...): take in two objects and returns true or false, based on a perfect match.
• findKey(...): take in an object and a callback. It scan the object and return the first key for which the callback returns a truthy value. If no key is found, then it returns undefined.
• findKeyByValue(...): take in an object and a value. It 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.
• head(...): return the first item in the array.
• letterPositions(...): return all the indices (zero-based positions) in the string where each character is found.
• map(...): take in two arguments: an array to map and a callback function. It returns a new array based on the results of the callback function.
• middle(...): take in an array and return the middle-most element(s) of the given array.
• reverse(...): take any number of command line arguments, all strings, and reverses them before outputting them one at a time to the console.
• tail(...): returns every element except the head (first element) of the array.
• takeUntil(...): takes in two parameters as well: the array to work with and the callback (which Lodash calls "predicate"). It returns a "slice of the array with elements taken from the beginning."
• without(...): returns a subset of a given array, removing unwanted elements.