Created
December 23, 2015 03:46
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| class String | |
| def **(n) | |
| case n | |
| when 2 | |
| ([self]*self.length).join("\n") | |
| end | |
| end | |
| end | |
| puts "hello"**2 | |
| # hello | |
| # hello | |
| # hello | |
| # hello | |
| # hello | |
| #=>nil |
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