top level methods

01_main.rb

puts
puts self.inspect               # main
puts self.instance_of?(Object)  # true
puts "----"
 
def test_method
  "test"
end

top_level = self

puts self.respond_to?(:test_method)       # false
puts top_level.respond_to?(:test_method)  # false
puts "----"
 
puts self.private_methods.include?(:test_method)       # true
puts top_level.private_methods.include?(:test_method)  # true
puts "----"
 
begin
  main.methods
rescue NameError => e
  puts e.message
end
 
begin
  self.test_method
rescue NoMethodError => e
  puts e.message
end

begin
  top_level.test_method
rescue NoMethodError => e
  puts e.message
end

puts "----"
obj = Object.new
puts obj.private_methods.include?(:test_method)  # true