10 lines
231 B
Ruby
10 lines
231 B
Ruby
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$ irb
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irb(main):001:0> def f(string1, string2, separator)
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irb(main):002:1> [string1, '', string2].join(separator)
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irb(main):003:1> end
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=> :f
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irb(main):004:0> f('Rosetta', 'Code', ':')
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=> "Rosetta::Code"
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irb(main):005:0> exit
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$
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