Ruby question about # Signs

Question

As seen here: http://railstutorial.org/chapters/rails-flavored-ruby#top for the file:

app/helpers/application_helper.rb:

module ApplicationHelper

           


        

Answer 1

It's called string interpolation. base_title is a variable, and the #{} characters denote that its value should be substituted in place of that marker.

Answer 2

It's string interpolation. Eg:

name = "nobosh"
puts "Hello, #{name}."

Prints

Hello, nobosh.