The chat tutorial listed for elixir is outdated. It uses a old version of phoenix and could be confusing to new users who would be learning a oudated set of syntax, application structure, commands i.e. mix phoenix.create vs. mix phx.create.

Also it's missing some steps. For one this they never do mix ecto.create without which the postgres database is not initialized so the app doesn't wo

As of #424 we can match on multiple Accept types. The examples haven't yet been updated for this behavior yet, however.

using the for attribute (matching the inputEl id)

There is a problem with the examples for watching templates https://github.com/sunng87/handlebars-iron/blob/master/examples/watch_server.rs .

no method named `watch` found for type `std::sync::Arc<hbs::HandlebarsEngine>` in the current scope

const rectangle = {
  width: 20, 
  height:10,
  area: 200
}
let {width, heigh, area, perimeter = 60} = rectangle;
console.log(width, height, area, perimeter)  //20 10 200 60
//Lets modify the object:width to 30 and perimeter to 80
const rectangle = {
  width: 30, 
  height:10,
  area: 200,
  perimeter:80
}
let {width, heigh, area, perimeter = 60} = rectangle;
console.log(width

Just like rails db:rollback