doc/examples/function_taking_eigenbase.cpp

#include <iostream>
#include <Eigen/Core>

template <typename Derived>
void print_size(const Eigen::EigenBase<Derived>& b) {
  std::cout << "size (rows, cols): " << b.size() << " (" << b.rows() << ", " << b.cols() << ")" << std::endl;
}

int main() {
  Eigen::Vector3f v;
  print_size(v);
  // v.asDiagonal() returns a 3x3 diagonal matrix pseudo-expression
  print_size(v.asDiagonal());
}
some small improvements to the page on functions taking eigen objects. - make the beginning more precise - make the first example be a full selfcontained compiled example, no need for all the others, but having the first one doesn't hurt. 2010-08-04 21:42:32 -04:00			`#include <iostream>`
			`#include <Eigen/Core>`

			`template <typename Derived>`
get rid of `using namespace Eigen` in sample code 2021-12-07 19:57:38 +00:00			`void print_size(const Eigen::EigenBase<Derived>& b) {`
some small improvements to the page on functions taking eigen objects. - make the beginning more precise - make the first example be a full selfcontained compiled example, no need for all the others, but having the first one doesn't hurt. 2010-08-04 21:42:32 -04:00			`std::cout << "size (rows, cols): " << b.size() << " (" << b.rows() << ", " << b.cols() << ")" << std::endl;`
			`}`

			`int main() {`
get rid of `using namespace Eigen` in sample code 2021-12-07 19:57:38 +00:00			`Eigen::Vector3f v;`
some small improvements to the page on functions taking eigen objects. - make the beginning more precise - make the first example be a full selfcontained compiled example, no need for all the others, but having the first one doesn't hurt. 2010-08-04 21:42:32 -04:00			`print_size(v);`
			`// v.asDiagonal() returns a 3x3 diagonal matrix pseudo-expression`
			`print_size(v.asDiagonal());`
			`}`