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  1. $test = ['1', '2', '1']
  2. $result = $test - ['1']
  3. print($result)
Success #stdin #stdout 0.01s 8120KB
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stdin
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Standard input is empty
stdout
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["2"]
https://ideone.com/N1ikcp
language:
Ruby (ruby 2.5.5)
created:
1 day ago
visibility:
public

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