Passing a string literal as a type argument to a class template

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You can have a const char* non-type template parameter, and pass it a const char[] variable with static linkage, which is not all that far from passing a string literal directly. 

#include <iostream>    

template<const char *str> 
struct cts {
    void p() {std::cout << str;}
};

static const char teststr[] = "Hello world!";
int main() {
    cts<teststr> o;
    o.p();
}

http://coliru.stacked-crooked.com/a/64cd254136dd0272

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