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c++classtemplatesstatictypename

static template functions in a class

How do I make the following function inside a class and then access this function from main? My class is just a collection of a bunch of static functions. 

template<typename T> double foo(vector<T> arr);
Solution

  • Define the function in the .h file.

    Works fine for me

    a.h

    #include <vector>
#include <iostream>

using namespace std;
class A {
public:
template< typename T>
    static double foo( vector<T> arr );

};

template< typename T>
double A::foo( vector<T> arr ){ cout << arr[0]; }

    main.cpp

    #include "a.h"
int main(int argc, char *argv[])
{
    A a;
    vector<int> arr;
    arr.push_back(1);
    A::foo<int> ( arr );
}