image/svg+xml
foldr_start_with_parser<int_plus, int_token, sum_op>
BOOST_METAPARSE_STRING("11 + 13 + 3 + 21")
int_plus
int_plus
int_plus
int_token
int_<48>
parsing withfoldr_start_with_parser< int_plus, int_token, sum_op>
int_<11> int_<13> int_<3> int_<21>
sum_op
int_<24>
sum_op
int_<37>
sum_op