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

Its nowhere near as terse, and of course I didn't compile this.

float atof_s( std::string & s ) { return atoi( s.c_str() ); }
{ 
ifstream f("data.txt")
string str;
vector> data;
while( getline( f, str ) ) {
  vector v;
  boost::algorithm::split_iterator e;
  std::transform( 
     boost::algorithm::make_split_iterator( str, token_finder( is_any_of( "," ) ) ),
     e, v.begin(), atof_s );
  v.resize(3); // only grab the first 3
  data.push_back(v);
}