Ruby Global Variables

Question

In Ruby is there any method that lists all the global variables available at the point of inspection like $GLOBALS in php?

Should this question be tagged reflection, or tagged metaprogramming? — Andrew Grimm
– Andrew Grimm, Commented Mar 1, 2010 at 22:33

Geo · Accepted Answer · 2010-03-01 16:38:54Z

2

Yes. There is Kernel#global_variables.

puts global_variables

Since it's a method from Kernel, you can call it without having to mention the class name.

answered Mar 1, 2010 at 16:38

Geo

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5 Comments

Dharam Gollapudi Over a year ago

@Geo: Thanks for the feedback. Is there any shortcut like $:, $. or something built-into ruby?

Geo Over a year ago

Ruby has some special variables, like in the way Perl does. See zenspider.com/Languages/Ruby/QuickRef.html , under the section Predefined variables.

Dharam Gollapudi Over a year ago

I did see the predefined variables in Ruby, but if I am not wrong, there is no predefined variable that acts as a shortcut to the global_variables method.

Geo Over a year ago

I don't think there is such a thing in Ruby.

Wayne Conrad Over a year ago

I cannot find such a thing in the MRI 1.8.7 source

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