Get all local variables or available methods from irb?

Question

When I go into irb and type in a command that does not exist I get an error stating

\"undefined local variable or method \'my_method\' for main:Object (NameError         


        

Answer 1

Great answers.
As you explore, you have these at your disposal:

obj.private_methods 
obj.public_methods 
obj.protected_methods 
obj.singleton_methods

and

MyClass.private_instance_methods 
MyClass.protected_instance_methods 
MyClass.public_instance_methods

Usage like :

obj.public_methods.sort

Can make review easier too.

Some special cases exist like

String.instance_methods(false).sort

... will give you only the instance methods defined in the String class, omitting the classes it inherited from any ancestors. As I expect you know, you can see more here: http://www.ruby-doc.org/docs/ProgrammingRuby/ but it's not as fun as inspecting and reflecting in irb.

Happy exploring -

Perry