@leonzhou9722/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 @leonzhou9722/lotide

Require it:

const _ = require('@leonzhou9722/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• assertArrayEqual(array1,array2): takes in two arrays and assess if they are equal
• assertEqual(a,b): takes in 2 primitive values and assess if they are equal
• assertObjectsEqual(obj1, obj2): takes in 2 objects and assess if they are equal
• countLetters(string): takes in a string and returns the number of letter in it
• countOnly(array1, {item1:true, item2:false, ...itemN: true}): takes in an array and an object containting items marked false or true. returns an objec with the number of occurences of items marked true in the array.
• eqArrays(arr1, arr2): deep comparison of weather 2 arrays are equal
• findKeys(obj1, (key) => true/false): takes a object in and a callback function callback function will inspect each property of the object and the key of the first property that evaluates to true will be returned.
• findKeyByValue(obj, value): returns the first key to a property that evaluates to value.
• head(arr): takes an array in and returns the first element
• letterPositions(searchstring, targetChar): takes in a string with a single character. returns the positions of its occurence in an array.
• map(arr, callback): manipulates each element of arr based on supplied callback functions.
• middle(arr): returns the middle elements of an array. middle 2 for even length 1 for odd length.
• tail(arr): returns the input arr without the first element
• takeUntil(arr, callback): evaluates each element of arr with the callback function. Returns a copy of the array from index 0 to the the first index where the callback evaluates to true.
• without(searchArray, targetArray): removes all elements of targetArray that occurs in searchArray.