From: Ronnie Aa <lists@...>
Date: 2012-04-28T20:12:00+09:00
Subject: list local_variables in a def by means of a method

Hello,

As I work with ruby in combination with a programs API , i'm not able
to use a debugger. (at least I think ::)

So i'm looking for a way to list my variables.

This is what I have:

def listvar

  instance_variables.each  {|inst| puts "#{inst} is #{inst.class} and is
  equal to #{eval(inst).inspect}" }

  local_variables.each {|var| puts "#{var} is #{var.class} and is equal
to #{eval(var).inspect}"  }

end



module Test

  @foo = 'good'

  def self.one
    foo = 'good'
    foo1 = 'better'
    foo2 = 'somehing'
    @foo.upcase!
    listvar
  end

  def self.two
    foo = 1
    foo1 = 2
    foo2 = 3
    @foo.reverse!
    listvar
  end

end
Test.one ==>  @foo is String and is equal to "GOOD"
Test.two ==>  @foo is String and is equal to "DOOG"

So it works for instance_variables only, not for local_variables.
If I want to list the local variables for self.one I have to do
it like this:



  def self.one
    foo = 'good'
    foo1 = 'better'
    foo2 = 'somehing'
    @foo.upcase!
    local_variables.each {|var| puts "#{var} is #{var.class} and is
equal to #{eval(var).inspect}"  }
  end

==>
foo is String and is equal to 1
foo1 is String and is equal to 2
foo2 is String and is equal to 3



But its not nice!!!!! How can i achieve this by just typing a command,
like with the instance_variables??

Thnx

Liquid

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