John swana

Escmascript es2017 or better known as es16 is the edition after the famously popular es15, In this edition there are only two new additional features the exponention operator and Array.prototype.includes() function exponention operator ** Operator is a short hand method used for raising numbers to their power Its syntax is similar to native operators such as '+' Addition and '-' (minus) for subtraction Example usage Initially to raise a number to the power you would need to use math library pow function as; Math.pow({number}, {factor}) Since es2017 you can simplify the operation above down to simply as; {number} ** {factor} Example as; 5 ** 2 // Giving you 25 Array.prototype.includes () Array includes is a feature similar to a pre existing function array.indexof() as compared to array.indexof() array.includes() function notably returns a true  boolean on matched value, and false if value not matched Examples on how to use 'array.includes ()' funct

Unused css rules elimination process is a lot more like tree shaking done by JavaScript bundlers for instance if you're familiar with how webpack eliminates dead code as a result tree shaking generates a much smaller bundle with only essential code Purifycss is a nodejs npm open source package that eliminates unused css You can use purifycss to remove excess css from libraries such as bootstrap, materal design lite to name a few, Installation You can get "purify-css" npm package from the package manager by typing in your terminal; npm i purify-css To install globally add -g flag; npm i -g purify-css Basic example usage; You can use css purify global cli package as; Syntax; purifycss {css} {html} Important flags; -m minify output -o specify output file name For example; purifycss *.css *.html -o css.min.css Output containg minified css rules will get saved to css.min.css

Array includes is a feature introduced in JavaScript es16 or es2017 it's similar to a pre existing function array.indexof() as compared to array.indexof() array.includes() function notably returns a true  boolean on matched value, and false if value not matched Examples on how to use 'array.includes()' function The first argument is the value to be looked upon in an array; const arr = ['dogs', 'cats', 'snakes'] arr.includes('liars') // false arr.includes('snakes') // true arr.includes('lizards') // false I hope you get the concept

** Operator in an es6 Escmascript feature a short hand method used for raising numbers to their power Its syntax is similar to native operators such as '+' Addition and '-' (minus) for subtraction Example ussage Initially to raise a number to the power you would need to use math library pow function as; Math.pow({number}, {factor}) Since es2017 you can simplify the operation above down to simply as; {number} ** {factor} Example as; 5 ** 2 // Giving you 25

I compiled stapes to create a game similar to Nokia developed, popular game called 'snake' Snake was first developed by Nokia, programmed in 1997 by Taneli Armanto and published on Nokia mobile devices,  It was introduced on Nokia model 6110, 3310 from 2000 and later the game was rebranded as " Snake Xenzia " Included on later mobile phone models I made a version that is more simplified and more beginners friendly, It's based on the same idea of making a snake that grows as it eats stuff and the score increases as it grows I'm implementing this whole game in pure vanilla JavaScript and a taste of html5 canvas, In this project the canvas is used as a renderer for the game's visual output concepts and initial ideas I got the idea while doing another retro gaming project, i thought it would be good too if i created this game, from start my plan had been simplicity and making this game easy to implement, So to simplify everything i had

I'm going to compile ways in which you can create archives compressed using zip algorithm in nodejs or a similar JavaScript runtime. node-zip is an open source zip archiving utility authord by daraosn and folked from jszip capable of compresding files into a zip archive and extracting zip archives in JavaScript. node-zip is available on npm you can install it in your terminal window by typing; npm install node-zip example usage const  zip = new require('node-zip')() zip.file('test.file', 'John Swana') const data = zip.generate({base64:false,compression:'DEFLATE'}) console.log(data) How to unzip a zip archive const zip = new require('node-zip')(data, {base64: false, checkCRC32: true}) console.log(zip.files['test.file'])

zip  is  a compression and file packaging utility for Linux, Unix OS, MAC and MS zip utility comes handy with another companion program called unzip, unzip is used to list, test and extract zip archives Basic usage ; zip basic usage ; Zip command line program can be used to compress files as; zip -{flags} {package} {item} Example on how to zip a file using zip You can zip and compress a file as; zip pack.zip filename.mp3 Zip will get the command to package filename.mp3 and store it in an archive named pack.zip How to compress a directory with zip Directories can be archived using the -r flag You can zip and compress a directory as; zip -r bundle.zip directory How to unzip files using unzip unzip a companion program to zip is used to extract archives typed unzip followed by archive name to extract a package as; unzip  {filename} for example; unzip pack.zip

Targeted is an archiving program designed to package, store, and compress multiple files into a single portable package the name tar is an abbreviation for tape archiver Apart from creating .tar archives tar is also capable of compressing files using zip, bzip2, and gzip compression algorithms Tar flags c — compress directive x — extract directive t — tabulate contents f — specify filename z — use zip/gzip compression j — use bzip2 compression k — do not overwrite t — files from file w — ask for configuration v — verbose gzip flags d — decompress file Tar commandline commands syntax tar -{arguments} {params} Example tar commands tar -cf music.tar music.mp3 Tar archiver will be directed to compress music.mp3 into a tar archive named music.tar and save it in the current working directory tar -xf music.tar Tar will be directed to extract music.tar archive and save the constituent contents of the archive in the current working directory how to make a zip archives

Tensorflow is a hardware accelerated JavaScript library for building, training, testing and deploying machine learning models on a JavaScript runtime environment. Installation through html script tag For use within the browser you can link to jsdelivr content delivery network using an html script tag as follows; <script src="https://cdn.jsdelivr.net/npm/@tensorflow/tfjs@1.0.0/dist/tf.min.js"></script> Installation through npm package manager Alternatively you can install a self hosted version of tensorflow from npm, in your terminal type; npm install '@tensorflow/tfjs' Installation for tfjs-node on npm tensorflow has two nodejs packages made specifically for nodejs Installation for '@tensorflow/tfjs-node' This version is a cpu only version it doesn't utilize gpu to do the computing, install tfjs node by typing; npm install '@tensorflow/tfjs-node' Installation for '@tensorflow/ tfjs-node

String repeat is a function that can be used to multiply a string for a given number of times, its a feature that is closely related to string multiplication operator in Python programming language, as compared to Python's syntax; ("String") * (number of times to repeat) "A" * 3 // returns "AAA" Something similar may be archived using string repeat function in JavaScript as; ("String").repeat(number Of times to repeat) For example to triple "A" you can do as; "A".repeat(3) Practical example is with lyrics; const part = "i feel you, " const lyrics = part.repeat(4) + " A, B, C" // "i feel you, i feel you, i feel you, i feel you, A, B, C" Further reading; String . prototype . repeat () MDN