Question

If I want to initialize a vector inside a class, for example:

class A {
  private:
    static std::vector<double> label_map;
};

If I want to initialize this static vector, what is the best way to do? I’ve read in some other posts saying that starting from GCC 4.4, it supports new features in C++0x and we can directly use

static std::vector<double> label_map = {1, 2, 3, 4};

However seems it doesn’t work for me.

Answer 1

So… wrapping up:

// thefile.cpp

class Foo
{
    static std::vector<int> v;
};

std::vector<int> Foo::v { 1, 2, 3, 4 };

Compile with g++ -std=c++0x -c -o thefile.o thefile.cpp # ....