void foo(char[] a) {}
void bar(char[][] b) {}
int main(string[] args)
{
char[4] a;
char[4][4] b;
foo(a); // OK: implicit convertion
bar(b); // Error: cannot implicitly convert
// char[4u][4u] to char[][]
}
what is the reason for the different behaviour?
What's best to pass such multidimensional arrays?