node-js-react

array_or_not.js

let single_or_array = ['a']

Array.isArray(single_or_array) ? single_or_array.map(d => console.log(d)) : console.log(single_or_array)

mongodb.js

import mongodb from 'mongodb';

const { MongoClient } = mongodb

const connectionURL = 'mongodb://127.0.0.1:27017'
const databaseName = 'NAME'

// const id = new ObjectID()
// console.log(id)

MongoClient.connect(connectionURL, { useUnifiedTopology: true }, (error, client) => {
    if (error) {
        return console.log('Unable to connect to database!')

    }

    const db = client.db(databaseName)
    console.log('Connected correctly!')

    // db.collection('users').insertOne({
    //     name: 'Test',
    //     age: 111
    // }, (error, result) => {
    //     if (error) {
    //         return console.log('Unable to insert user')
    //     }

    //     console.log(result.ops)
    // })

})

node-threads-benchmark.js

process.env.UV_THREADPOOL_SIZE = 2;
// Windows -> set UV_THREADPOOL_SIZE=7 && node threads.js
const crypto = require('crypto')

const start = Date.now();

crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
    console.log('1:', Date.now() - start);
});

crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
    console.log('2:', Date.now() - start);
});



console.log('1:', Date.now() - start);