srebalaji

// Async function to send mail to a list of users.
const sendMailForUsers = async (users) => {
  const usersLength = users.length
  
  for (let i = 0; i < usersLength; i += 100) { 
    const requests = users.slice(i, i + 100).map((user) => { // The batch size is 100. We are processing in a set of 100 users.
      return triggerMailForUser(user) // Async function to send the mail.
       .catch(e => console.log(`Error in sending email for ${user} - ${e}`)) // Catch the error if something goes wrong. So that it won't block the loop.
    })
    

srebalaji

const durations = [1000, 2000, 3000]

promises = durations.map((duration) => {
  return timeOut(duration).catch(e => e) // Handling the error for each promise.
})

Promise.all(promises)
  .then(response => console.log(response)) // ["Completed in 1000", "Rejected in 2000", "Completed in 3000"]
  .catch(error => console.log(`Error in executing ${error}`))

SiddharthaChowdhury

const fs 		= require('fs');
const jwt 		= require('jsonwebtoken');
// http://travistidwell.com/blog/2013/09/06/an-online-rsa-public-and-private-key-generator/
// use 'utf8' to get string instead of byte array  (1024 bit key)
var privateKEY 	= fs.readFileSync('./private.key', 'utf8'); // to sign JWT
var publicKEY 	= fs.readFileSync('./public.key', 'utf8'); 	// to verify JWT

module.exports = {
	sign: (payload, $Options) => {
		/*

lopspower

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

Download This sample on Google Play Store

gielcobben

JPG:
$ brew install jpegoptim
$ find . -name "*.jpg" -exec jpegoptim -m80 -o -p --strip-all {} \;

- PNG:
$ brew install optipng
$ find . -name "*.png" -exec optipng -o7 {} \;