Author
anonymous
almost 5 years ago
Ruby
ruby HEAD 2.8.0dev
$ ruby prog.rb
prog.rb:24:in `<main>': undefined method `refined_method' for #<X:0x0000555565c4fc10> (NoMethodError) Using Ruby 2.8.0
prog.rb:24:in `<main>': undefined method `refined_method' for #<X:0x0000555565c4fc10> (NoMethodError)
Using Ruby 2.8.0