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  1. # works
  2. a = [2, 1, 3]
  3. a.sort! # notice the !
  4. print a
  5.  
  6. #doesn't work
  7. a = "symbols"
  8. a.to_sym! # notice the !
  9. print a
Runtime error #stdin #stdout #stderr 0.01s 7416KB
comments (?)
stdin
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Standard input is empty
stdout
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[1, 2, 3]
stderr
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prog.rb:8:in `<main>': undefined method `to_sym!' for "symbols":String (NoMethodError)
https://ideone.com/D7dZNz
language:
Ruby (ruby 2.5.5)
created:
9 years ago
visibility:
secret

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