switch namespace by if condtion
- by pascal
Hi,
in my C++ program I have several namespaces that contain several pointers with identical names.
I then want a function to choose a namespace according to a parameter. I.e. something like:
#include <iostream>
namespace ns1{
double x[5]={1,2,3,4,5};
}
namespace ns2{
double x[5]={6,7,8,9,10};
}
int main(){
int b=1;
if(b==1){
using namespace ns1;
}
if(b==2){
using namespace ns2;
}
std::cout << x[3] << std::endl;
}
However, this doesn't work since the compiler complains that x isn't known in that scope. I guess the problem is that "using namespace ..." is only valid within the if-statement.
I think that it should be possible to switch namespaces somehow, but cannot find out how...
Do you know how to do this without casting all variable separately?
int main(){
int b=1;
double *x;
if(b==1){
x = ns1::x;
}
if(b==2){
x = ns2::x;
}
std::cout << x[3] << std::endl;
}
Cheers,
Pascal
