Macro for static std::string object from literal

Question

Suppose I need to call a function foo that takes a const std::string reference from a great number of places in my code:

int foo(const          


        

Answer 1

This will work for simple strings - w/o whitespace:

#define DECL_STR(s) const std::string str_##s (#s)

Usage in header (parse once!):

DECL_STR(Foo);
DECL_STR(Bar);

In code:

func(str_Foo);
func(str_Bar);