Results 2 issues of Eleobert

I get undefined references to r2 when I try to compile my project. Here is the cmake file: ``` cmake_minimum_required(VERSION 3.14 FATAL_ERROR) project(proj) find_package(Arrow REQUIRED) add_executable(proj src/main.cpp) target_compile_features(proj PRIVATE cxx_std_20)...

Instead of passing `std::vector` I added a new class `as_matrix` that allow passing data with size defined at runtime. The class is only an interface and all operations are read...