C++ string parsing (python style)

Question

I love how in python I can do something like:

points = []
for line in open(\"data.txt\"):
    a,b,c = map(float, line.split(\',\'))
    points += [(a,b,c)]
<         


        

Answer 1

This answer is based on the previous answer by j_random_hacker and makes use of Boost Spirit.

#include 
#include 
#include 
#include 
#include 

using namespace std;
using namespace boost;
using namespace boost::spirit;

struct Point {
    double a, b, c;
};

int main(int argc, char **argv) 
{
    vector points;

    ifstream f("data.txt");

    string str;
    Point p;
    rule<> point_p = 
           double_p[assign_a(p.a)] >> ',' 
        >> double_p[assign_a(p.b)] >> ',' 
        >> double_p[assign_a(p.c)] ; 

    while (getline(f, str)) 
    {
        parse( str, point_p, space_p );
        points.push_back(p);
    }

    // Do something with points...

    return 0;
}