[&] (StringPiece line) -> bool {
CHECK(boost::regex_match(line.begin(), line.end(), match, mapLineRegex));
uint64_t begin = fromHex(sp(match[1]));
[&] (StringPiece line) -> bool {
CHECK(boost::regex_match(line.begin(), line.end(), match, mapLineRegex));
uint64_t begin = fromHex(sp(match[1]));