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Ali Sawari AliSawari

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View rxjs.array-over-time-iteration.js
const keyInputs = [
['n', 1],
['e', 10],
['w', 100],
[' ', 1],
['y', 10],
['o', 100],
['r', 300],
['k', 200]
];
View cloudSettings
{"lastUpload":"2020-05-27T15:30:36.153Z","extensionVersion":"v3.4.3"}
View readFilePromise.js
const { readFile } = require('fs')
const { promisify } = require('util')
const readFilePromise = promisify(readFile)
readFilePromise('myFile').then(data => {
console.log(data.toString())
}).catch(e => console.log(e))
View promisify-example.js
// import it!
const { promisify } = require("util")
// turn your ordinary func into a promise func!
const doublePromise = promisify(double)
// use it!
doublePromise(14).then(res => {
console.log(res)
}).catch(err => console.log(err))
View callback.js
function double(number, callback){
if(number > 2){
callback(null, number * 2)
} else {
callback(new Error("number should be more than 2"))
}
}
@AliSawari
AliSawari / promise.js
Created Jun 4, 2019
here's how to create promise-based functions
View promise.js
// say take a number and return its double
// resolve : the success call . which goes in the first then
// reject : the error call, which goes in .catch
function double(number){
return new Promise((resolve, reject) => {
if(typeof number == 'number'){
resolve(number * 2)
} else reject("the argument should a Number")
@AliSawari
AliSawari / then.js
Created Jun 4, 2019
the arguments in then calls are the returns of the previous ones
View then.js
// with each return , the value goes for the next then in chain
// you can chain as many thens as you want, even if you dont return a value
doSomething(args).then(result => {
return result + 2
}).then(plusTwo => {
return plusTwo + 2
}).then(plusFour => {
// and the chain continues as many thens as you want...
}).catch(err => console.log(err))
@AliSawari
AliSawari / callback.js
Last active Jun 4, 2019
a good way to get rid of the callbacks in nodejs
@AliSawari
AliSawari / index.js
Created Mar 17, 2019 — forked from akexorcist/index.js
Axios post method requesting with x-www-form-urlencoded content type
View index.js
const axios = require('axios')
...
const requestBody = {
name: 'Akexorcist',
age: '28',
position: 'Android Developer',
description: 'birthdate=25-12-1989&favourite=coding%20coding%20and%20coding&company=Nextzy%20Technologies&website=http://www.akexorcist.com/',
awesome: true
@AliSawari
AliSawari / run.js
Created Feb 22, 2019 — forked from m-esm/run.js
Node.js sending and receiving file using only 'http' and 'fs' module (no framework)
View run.js
var http = require("http");
var fs = require("fs");
var server = http.createServer().listen(3000);
server.on("request", function(req, res) {
if (req.method != "POST") return res.end();
var imageName = "received-" + Date.now() + ".jpg";
var writeStream = fs.createWriteStream(imageName);
req.pipe(writeStream);
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