Best method? to pass a bidimensional array with known values as a parameter to a function inside a library

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6

I did not want to start an other code duplication discussion, but indeed, a more generic solution would look something like this:

template <size_t n, size_t m> void test(int (& arr)[n][m]) {
  // Element (i, j) can be accessed as `arr[i][j]`.
}

If code duplication is an issue, then perhaps the following would be a workaround, although it comes at the expense of easy indexing.

void test_(int* arr, size_t n, size_t m) {
  // Element (i, j) can be accessed as `*(arr + i * n + j)`.
}

template <size_t n, size_t m> void test(int (& arr)[n][m]) {
  test_(&arr[0][0], n, m);
}