Convert array of hex decimal representation (ObjectId.data) to a hex string

convert decimal to hex string

# Converts an array of hex decimal representation (ObjectId.data) to a hex string.
# e.g [78, 26, 131, 172, 159, 165, 6, 0, 1, 0, 0, 125] > '4e1a83ac9fa506000100007d'
# convert_to_hex_string([78, 26, 131, 172, 159, 165, 6, 0, 1, 0, 0, 125])

def convert_to_hex_string(dec_array)
  dec_array.map { |n| "%02x" % n }.join
end

Nice. So much neater :-)