redis/redis-rb — pull request #387 by pmenglund (2013-11-21 06:02:21+00:00)
Title: modify hgetall to also yield field and value

Added a helper to make `hgetall` yield field & value pair, which can be used like this:

```
redis.hgetall('foo') do |field, value|
puts "field = #{field} : value = #{value}"
end
```