Created
January 17, 2016 19:28
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LearnElixir.tv Episode 8 Exercise
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| def join(strs, separator) do | |
| last = List.last(strs) | |
| for str <- strs, into: "" do | |
| if str != last do | |
| str <> separator | |
| else | |
| str | |
| end | |
| end | |
| end |
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