I need to initialize a const int array in a class constructor via initialization list in C++.
-std=c++11 or -std=gnu++11.{1, 2, 3, 4}.The only way I can conceive doing this while staying out of the C++11 initializer list realm is to bury it in a struct wrapper and value-initialize it in your construct-initializer list:
#include <iostream>
using namespace std;
struct ArrayWrap
{
int content[4];
int& operator [](size_t n) { return content[n]; }
int operator [](size_t n) const { return content[n]; }
};
static const ArrayWrap content = { {1,2,3,4} };
struct MyObj
{
const ArrayWrap arrwrap;
MyObj() : arrwrap(content) {}
};
int main(int argc, char *argv[])
{
MyObj obj;
for (int i=0;i<4;++i)
cout << obj.arrwrap[i] << ' ';
cout << endl;
return EXIT_SUCCESS;
}
Output
1 2 3 4
It is common in C to bury fixed arrays in structures when returning them from functions by value, and in this case I'm simply exploiting the default copy-ctor of the wrapper struct as-generated by the C++ compiler.
Probably not the ideal solution for what you want, but it does work, and compiles under C++98.
Well, if you're banning C++11 solutions from the candidate set, then you simply cannot do this.
I want to avoid using -std=c++11 or -std=gnu++11.
const intarray in a class constructor via initialization list with a set of fixed values? Why not just make it astaticmember (seeing as it's contents cannot change and aren't specific to the instance being constructed)?