Syntax definitions

ruby.rb

NAME = 'Programmer'

def say_hello(to)
  raise StandardError.new('Noone to say hello to!') unless to
  
  is_noon = Date.noon?
  
  # We are missing some cases like
  # good night, but this is enough value
  # for now
  if is_noon
    puts "Good afternoon #{to}!"
  else
    puts "Good morning #{to}!"
  end
  
  true
end

say_hello NAME