string.cxx

#include<cstdio>
#include<string>
#include<algorithm>

template<constchar name[]>
voidfunc() {
 @meta printf("func<%s> instantiated\n", name);
}

intmain() {
// Instantiate on a string literal.
 func<"My string literal">();

// Instantiate on a constexpr or meta const char array.
constexprchar array[] = "My constexpr string";
 func<array>();

 @meta char array2[] = "My meta string";
 func<array2>();

// Instantiate on a constexpr or meta pointer to character.
constexprconstchar* ptr = "My constexpr string";
 func<ptr>();

 @meta constchar* ptr2 = "My meta string";
 func<ptr2>();

// Instantiate on a meta std::string. This is not a literal type so must
// be made meta.
 @meta std::string s = "My meta string";
 func<s>();

// The strings can be modified at compile time. They can come from any
// source. They don't have to refer to literals!
 @meta std::transform(s.begin(), s.end(), s.begin(), toupper); 
 func<s>();

return0;
}