class Hashie::Rash

def all(query)
  return to_enum(:all, query) unless block_given?
  if @hash.include? query
    yield @hash[query]
    return
  end
  case query
  when String
    optimize_if_necessary!
    # see if any of the regexps match the string
    @regexes.each do |regex|
      match = regex.match(query)
      next unless match
      @regex_counts[regex] += 1
      value = @hash[regex]
      if value.respond_to? :call
        yield value.call(match)
      else
        yield value
      end
    end
  when Numeric
    # see if any of the ranges match the integer
    @ranges.each do |range|
      yield @hash[range] if range.cover? query
    end
  when Regexp
    # Reverse operation: `rash[/regexp/]` returns all string keys matching the regexp
    @hash.each do |key, val|
      yield val if key.is_a?(String) && query =~ key
    end
  end
end