Does a function like pythons dir() excist for ruby?

ruby-talk
1

I am using interactive Ruby for quick testing my swigged c++ module. In
python i can write down the command dir(), and I will get what`s inside
the module. Is there a similar function for Ruby ?

2

Hi,

···

At Wed, 28 Jan 2004 19:54:53 +0900, Asbjørn Reglund Thorsen wrote:

I am using interactive Ruby for quick testing my swigged c++ module. In
python i can write down the command dir(), and I will get what`s inside
the module. Is there a similar function for Ruby ?

$ ri instance_methods
------------------------------------------------ Module#instance_methods
mod.instance_methods(include_super=false) => array

 Returns an array containing the names of public instance methods in
 the receiver. For a module, these are the public methods; for a
 class, they are the instance (not singleton) methods. With no
 argument, or with an argument that is +false+, the instance methods
 in _mod_ are returned, otherwise the methods in _mod_ and _mod_'s
 superclasses are returned.

    module A
      def method1()  end
    end
    class B
      def method2()  end
    end
    class C < B
      def method3()  end
    end
 
    A.instance_methods                #=> ["method1"]
    B.instance_methods                #=> ["method2"]
    C.instance_methods                #=> ["method3"]
    C.instance_methods(true).length   #=> 43

    A.instance_methods                #=> ["method1"]
    B.instance_methods                #=> ["method2"]
    C.instance_methods                #=> ["method3"]
    C.instance_methods(true).length   #=> 43

–
Nobu Nakada

3

better :slight_smile:
IIRC dir() will give you all the atributes, both functionsn constants
and so on. In ruby you may be more specific with
Module.instance_methods
public_methods
private_instance_methods
constants
and so on :slight_smile:

···

il Wed, 28 Jan 2004 11:52:35 +0100, Asbjørn Reglund Thorsen asbjoert@ifi.uio.no ha scritto::

I am using interactive Ruby for quick testing my swigged c++ module. In
python i can write down the command dir(), and I will get what`s inside
the module. Is there a similar function for Ruby ?