Regex Key Match

Javascript: Counting Keys in a Bucket ISO8601 DateTimes <a class="internal present" href="/basho/riak_function_contrib/wiki/Regex-Key-Match">Regex Key Match Return Bucket/Key Pairs Slenderize <a class="internal present" href="/basho/riak_function_contrib/wiki/Sorting-By-Field">Sorting by Field Stats
Erlang: Delete Key Reduce Phase Luwak Files Return Bucket/Key Pairs Save the Result of a Map to a Riak Bucket/Key

Matching Records in a Map Phase with a Regex

As you can see, this is a simple function written in JavaScript. Its original use was to return keys that match a given regex.

This is the entirety of the function:

function keyMatch(value, arg){ 
  if (value.values[0].data.match(arg)) { 
    return [value.key] 
  } else {
    return []
  }
}