file_io.h

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#pragma once
 
#include <string>
#include <vector>
 
void read_vector_from_file(const std::string& file_name, std::vector<double>& v);
 
 
void write_vector_to_file(const std::string& file_name, const std::vector<double>& v);
 
void fill_vector(std::istream& istr, std::vector<double>& v);