Alex Merced's BetterTypes
AlexMercedCoder.com
This library contains useful classes, methods and functions.
installation
CDN LINK: http://www.alexmercedcoder.com/better.js
NPM
npm i @alexmerced/bettertypes
const {
Random,
BetterSet,
BetterString,
BetterArray
} = require('@alexmerced/bettertypes');
BetterArray
new BetterArray(array) => creates an instance of better array which gives you access to all array methods via the arrMeth method plus several new methods
BetterArray.arrMeth(method, argument) => pass an array method as a string a second string to pass as an argument, it return an array with the current BetterArray at index 0 and the result of the method in index 1.
BetterArray.random() => return random element from array
BetterArray.remove((value, index) => return boolean) => the opposite of filter, remove elements where the callback function returns true, returns a BetterArray
BetterArray.undupe() => returns a BetterArray of the array with duplicates removed
BetterArray.randElim() => eliminates a random element and returns it
BetterArray.leaveOne() => Randomly eliminates all but one element from array and returns a BetterArray of removed elements
BetterArray.leaveSome(number) => Randomly eliminates all but a defined number of elements from array and returns a BetterArray of removed elements
BetterArray.findRemove(value) => finds and removes value from array returning the removed value
BetterArray.addLength(length, value) => increases BetterArray to desired length and fills in additional spots with the value passed.
BetterArray.lessLengthRight(length) => removes elements from back of the array till is desired length, returns BetterArray of removed values
BetterArray.lessLengthRight(length) => removes elements from front of the array till is desired length, returns BetterArray of removed values
BetterArray.someMore((value, index) => return boolean, number) => returns true if the number of iterations that return true are equal or greater to the number argument
BetterArray.everyLess((value, index) => return boolean, number) => returns true if the number of iterations that return false are equal or less to the number argument
BetterArray.MapToObject((value, index) => return [key, value]) => like map but returns an object, the callback function must return a two element array [key, value]
BetterArray.MapToMap((value, index) => return [key, value]) => like map but returns an Map, the callback function must return a two element array [key, value]
BetterArray.MapToMap((value, index) => return [key, value]) => like map but returns a Set
BetterArray.MapToUnique((value, index) => return [key, value]) => like map but returns an BetterArray of only unique elements
BetterArray.squish() => removes the first and last elements of the array and return an array with the current BetterArray in index 0, and the array of removed element in index 1
BetterArray.shuff() => return shuffled version of BetterArray
BetterArray.toStrings() => return BetterArray with all elements casted as strings
BetterArray.toNums() => return BetterArray with all elements casted as Numbers
BetterArray.toBools() => return BetterArray with all elements casted as Booleans
BetterArray.iPop() => immutable pop, return array with new version of BetterArray with last value popped and the value popped
BetterArray.iPush(value) => immutable push, return an array with new version of BetterArray along with value pushed in.
BetterArray.iShift() => immutable shift, return array with new version of BetterArray and the value shifted
BetterArray.iUnshift(value) => immutable unshift, return an array with new version of BetterArray along with value unshifted in.
BetterArray.iSplice(index, amount) => immutable splice, return new version of array with the specified number of elements removed starting with the specified index.
superString
new BetterString('string') => creates a better a string which gives you access to the methods below
BetterString.strMeth('method','argument') => use string methods by passing in a string of the method name and string with the argument to pass, returns an array with the BetterString in index 0 and the result of the function in index 1
String.words() => returns array of words in the string
String.reverseWords() => returns BetterString with the words reversed
String.swapWord(target, replacement) => returns BetterString where the first instance of the target word is replaced by the replacement.
Utility Functions
Random.index(Array) => Return random number 0 - Array.length
Random.range(Low, High) => Return integer between low and high
Random.number(Number) => Return random number 0 - Number
Random.rangefl(Low, High) => Return float between low and high
Fetcher
The Fetcher class can help you encapsulate your API endpoints
const get = new Fetcher('http://www.xyz/get/')
const post = new Fetcher('http://www.xyz/post/')
const delete = new Fetcher('http://www.xyz/delete/')
const update = new Fetcher('http://www.xyz/update/')
call(callback,config,extUrl)
this function will call the url passed and run the callback function when the promise resolves and has been converted into JSON. You can pass in a config object include things like, headers, body, and specify type of call (defaults to get). The extUrl parameter will be appended to the url which allows you to get more mileage out of a single instance of fetcher. The resulting data from the most recent call is saved in case you need to access it again.
get.call((json) => console.log(json))
post.call((json) => console.log(json), {
method: 'post',
body: JSON.stringify(body),
headers: { 'Content-Type': 'application/json' },
}, "?user=SteveJones")
recall() returns the data from the most recent call
BetterSet
combines the benefits of arrays and sets but giving you access to a dataset in both forms. The constructor takes an array to generate the BetterSet from. I implemented the methods from the MDN examples for sets, cause well... they are useful.
const { BetterSet } = utils();
const pset1 = new BetterSet([1, 2, 3, 4]);
const pset2 = new BetterSet([3, 4, 5, 6]);
console.log(pset1.difference(pset2));
BetterSet Properties
this.set => the set of the array passed in
this.arr => this is the array of the array passed in without duplicates
BetterSet methods
this.arrMethod("Method", "Argument") => use any array method by passing in a string for the method you desire to use and another string with the argument you want to pass.
this.isSuperset(BetterSet) => Returns true if the BetterSet is a superset of the BetterSet passed as an argument
this.union(BetterSet) => Returns a Betterset that is a combonation of this BetterSet and the BetterSet passed in as an argument.
this.intersection(BetterSet) => returns BetterSet of elements in common between two BetterSets
this.symmetricDifference(BetterSet) => returns BetterSet of elements not shared by both BetterSets
this.difference(BetterSet) => returns BetterSet of elements not shared by this array with the passed in array