“...I've been working since 2008 with Ruby / Ruby on Rails, love a bit of Elixir / Phoenix and learning Rust. I also poke through other people's code and make PRs for OpenSource Ruby projects that sometimes make it. Currently working for InPay...”

Rob Lacey
Senior Software Engineer, UK

Instance method defined on class?

class Dave
  def monitor; end
end

Dave.method_defined?(:monitor)
 => true 
Dave.method_defined?(:iareweasel)
 => false