Best approach to init a matrix from `std::vector`?

[Ecolss Logan]

From the doc, we could init a matrix from std::array, but I wonder what’s the best way to do init from a std::vector?

Although we could iterate the std::vector and assign the values, but not sure if the perf might be poor?

[Klaus Iglberger]

Hi Ecolss!

I apologize for the late reply. I hope you have found the array constructors that are available for all dense matrices:

const std::unique_ptr<double[]> array( new double[6] );
// ... Initialization of the dynamic array
blaze::StaticMatrix<double,2UL,3UL> M1( 2UL, 3UL, array1.get() );

const std::vector<double> vector{ 1.1, 2.2, 3.3, 4.4, 5.5, 6.6 };
blaze::DynamicMatrix<double> M2( 2UL, 3UL, vector.data() );

Best regards,

Klaus!