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  1. puts('hello world'.capitalize())
  2. puts('hello world'.upcase())
  3. puts('Hello world'.length())
  4. puts('Hello world'.sub('world', 'programming'))
Success #stdin #stdout 0.01s 7452KB
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Hello world
HELLO WORLD
11
Hello programming
https://ideone.com/E1fjkL
language:
Ruby (ruby 2.5.5)
created:
9 years ago
visibility:
secret

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