打印 ruby​​ 文件中定义的所有方法

Question

I'd like to print all free methods (outside of classes or modules).

Consider this example.

def func_a
end

def func_b
end

puts "All methods: #{the_magic_method.join}"

The output should contain my two methods.

---

I know, for classes (eg string) I could use String.methods .

Answer 1

When free functions are defined in Ruby, they become private methods on the Object class. there is a default instance of the Object class which is the self context for ruby code outside of a class block, called the main instance.

initial_methods = private_methods

def func_a
end

def func_b
end

final_methods = private_methods
new_methods = final_methods - initial_methods


puts "#{new_methods.join}"

Answer 2

User.methods(false)

只返回类中定义的方法。