Matrix& Matrix::operator=(const std::string& s) {
std::string s1 = str_trim(str_replace(str_replace(s, "]", " "), "[", " "));
size_t rows = std::count(s1.begin(), s1.end(), ';');
std::string first = str_trim(str_before(s1, ";"));
size_t cols = std::count(first.begin(), first.end(), ' ');
init(rows+1, cols+1);
std::string ss = str_trim(str_replace(s1, ";", " "));
std::istringstream iss(ss);
for(size_t i=0; i<height; i++) {
for(size_t j=0; j<width; j++) {
iss >> data[i*width + j];
}
}
return *this;
}
string extract_var(string s)
{
return str_before(s,'=',"");
}