ruby/ruby — pull request #97 by gsterndale (2012-02-20 21:15:42+00:00)
Title: Add Enumerable#join with same semantics as Array#join

First time committer here. How can I improve this implementation?

Enumerable#join

```
>> (1..3).join(',')
=> "1,2,3"
```

http://bugs.ruby-lang.org/issues/5970

Thanks!