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  1. foo = [[nil]*5]*5
  2. foo[0][0] = 'bar'
  3. p foo
Success #stdin #stdout 0s 4760KB
comments (?)
stdin 
Standard input is empty
stdout 
[["bar", nil, nil, nil, nil], ["bar", nil, nil, nil, nil], ["bar", nil, nil, nil, nil], ["bar", nil, nil, nil, nil], ["bar", nil, nil, nil, nil]]
https://ideone.com/IpWbZ
language:
Ruby (ruby 2.5.5)
created:
12 years ago
visibility:
public

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