message: Possible solution of a problem of inf on mac
diff: @@ -125,6 +125,7 @@ std::vector< std::vector< double > > read_numbers_from_file_line_by_line( const
  * If there are three numerical entries per line, then the function assume that they are: dimension and birth/death coordinates.
  * If there are four numerical entries per line, then the function assume that they are: thc characteristic of a filed over which
  * persistence was computed, dimension and birth/death coordinates.
  + * The 'inf' string can appear only as a last element of a line.
  * The procedure returns vector of persistence pairs.
  **/
  std::vector<std::pair<double,double> > read_persistence_intervals_in_one_dimension_from_file(std::string const& filename, int dimension=-1 , double what_to_substitute_for_infinite_bar = -1 )
  @@ -156,17 +157,26 @@ std::vector<std::pair<double,double> > read_persistence_intervals_in_one_dimensi
  //If we do not know how many entries per line we have, we check it in below.
  if ( number_of_entries_per_line == -1 )
  {
  + number_of_entries_per_line = 0;
  + std::string line_copy = line;
  + if ( line.find("inf") != std::string::npos )
  + {
  + size_t np = line_copy.find("inf");
  + //replace symbols 'inf' in line_copy with whilespaces:
  + line_copy[np] = ' ';
  + line_copy[np+1] = ' ';
  + line_copy[np+2] = ' ';
  + number_of_entries_per_line = 1;
  + }
  //check how many entries we have in the line.
  - std::stringstream ss( line );
  + std::stringstream ss( line_copy );
  double number;
  std::vector<double> this_line;
  while ( ss >> number )
  {
  this_line.push_back( number );
  }
  - number_of_entries_per_line = (int)this_line.size();
  - //if thie line contains 'inf' string, then we need to increment number_of_entries_per_line
  - if ( line.find("inf") != std::string::npos )++number_of_entries_per_line;
  + number_of_entries_per_line += (int)this_line.size();
  if ( dbg )
  {
  std::cerr << "number_of_entries_per_line : " << number_of_entries_per_line << ". This number was obtained by analyzing this line : " << line << std::endl;
  @@ -184,6 +194,11 @@ std::vector<std::pair<double,double> > read_persistence_intervals_in_one_dimensi
  {
  std::cerr << "This line: " << line << " contains infinite interval. \n";
  }
  + //first we substitute inf by whitespaces:
  + size_t np = line.find("inf");
  + line[np] = ' ';
  + line[np+1] = ' ';
  + line[np+2] = ' ';
  if ( what_to_substitute_for_infinite_bar != -1 )
  {
  double beginn, field, dim;
  @@ -223,7 +238,7 @@ std::vector<std::pair<double,double> > read_persistence_intervals_in_one_dimensi
  }
  continue;
  }
  - //Then, we read the content of the line:
  + //Then, we read the content of the line. We know that it do not contain 'inf' substring.
  std::stringstream lineSS(line);
  double beginn, endd, field, dim;
  if ( number_of_entries_per_line == 4 )lineSS >> field;
  