List arguments to a Ruby method

list_method_arguments.rb

def get_inputs(a, b, c)
  Hash[local_variables.map { |name| [name, binding.local_variable_get(name)] }]
end

get_inputs('one', 'two', 'three')
#=> {:a=>"one", :b=>"two", :c=>"three"}


# Or package that in a reuseable method like so:
def get_local_variables(a_binding)
  Hash[a_binding.eval('local_variables').map { |name| [name, a_binding.local_variable_get(name)] }]
end

# Then pass a binding object into the method, so it can inspect the calling context:
def get_inputs(a, b, c)
  get_local_variables(binding)
end

get_inputs('one', 'two', 'three')
#=> {:a=>"one", :b=>"two", :c=>"three"}