fork download
copy 
  1. #!/usr/bin/ruby -w
  2.  
  3. class A
  4. end
  5.  
  6. $a = A.new
  7. $b = 999
  8. $c = A.new
  9.  
  10. p $a, $b, $c
  11.  
  12. puts '---------------------------------'
  13.  
  14. global_variables.each do |var|
  15.   if eval "#{var}.instance_of? A"
  16.     eval "#{var} = nil"
  17.   end
  18. end
  19.  
  20. p $a, $b, $c
Success #stdin #stdout 0s 4892KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
#<A:0x88fb940>
999
#<A:0x88fb92c>
---------------------------------
nil
999
nil
https://ideone.com/Jpphp
language:
Ruby (ruby 2.5.5)
created:
12 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!