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From: | Fritz Sonnichsen |
Subject: | Re: specifying Namespace for Matrix class? |
Date: | Fri, 15 Oct 2021 11:50:11 -0400 |
Maybe there are some tricks - like using wrappers - that could be used to place those classes in a namespace for your code.But out of the box, you pretty much hit it: These classes are in the "base" namespace (::) and might collide with other symbols of the same name in the "base" namespace.Gesendet: Freitag, 15. Oktober 2021 um 16:36 Uhr
Von: "Fritz Sonnichsen" <sonnichs@gmail.com>
An: "Markus Mützel" <markus.muetzel@gmx.de>
Cc: help-octave@gnu.org
Betreff: Re: specifying Namespace for Matrix class?Thanks Markus for your continued help.Regarding the Matrix Class, I am not a very strong C++ programmer-if the class is not contained in a namespace does this mean there is no way to specify it directly as in:classname::Matrix ....I have a huge amount of C++ code with the Matrix class and functions already specified (probably should have used a different more unique name!!!)Thanks againFritzOn Fri, Oct 15, 2021 at 10:18 AM Markus Mützel <markus.muetzel@gmx.de> wrote:afaict, the Matrix class is currently not in a namespace:HTH,MarkusGesendet: Freitag, 15. Oktober 2021 um 15:25 Uhr
Von: "Fritz Sonnichsen" <sonnichs@gmail.com>
An: help-octave@gnu.org
Betreff: specifying Namespace for Matrix class?---------- We are transitioning to a web based forum for community help discussions at https://octave.discourse.group/c/helpI am starting with some of the octave sample code (modified below) calling octave from C++. I eventually will have another Matrix class in the code so I need to differentiate by namespace.I cannot find out which namespace in octave contains "Matrix" but I vaguely recall it is in "math". Obviously I am wrong per this error message:matr.cpp:11:17: error: ‘Matrix’ is not a member of ‘octave::math’octave::math::Matrix a_matrix = Matrix (n, n);Any ideas which namespace it is in so I can qualify it in the code?ThanksFritz=============CODE=============#include <iostream>
#include <octave/oct.h>
using namespace octave::math;
int main (void)
{
std::cout << "Hello Octave world!\n";
int n = 2;
octave::math::Matrix a_matrix = Matrix (n, n);
for (octave_idx_type i = 0; i < n; i++)
for (octave_idx_type j = 0; j < n; j++)
a_matrix(i,j) = (i + 1) * 10 + (j + 1);
std::cout << a_matrix;
return 0;
}
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