module Spring::OkJson

def nibble(c)

def nibble(c)
  if ?0 <= c && c <= ?9 then c.ord - ?0.ord
  elsif ?a <= c && c <= ?z then c.ord - ?a.ord + 10
  elsif ?A <= c && c <= ?Z then c.ord - ?A.ord + 10
  else
    raise Error, "invalid hex code #{c}"
  end
end

Instance Methods