cpp/source_location.cpp
#include <iostream>
#include <string_view>
#include <source_location>
void log(std::string_view message,
const std::source_location& location = std::source_location::current()
) {
std::cout << "info:"
<< location.file_name() << ":"
<< location.line() << ":"
<< location.function_name() << " "
<< message << '\n';
}
int f(int i) {
log("Hello world!"); // Line 16
return i + 1;
}
int f(double i) {
log("Hello world!"); // Line 21
return i + 1.0;
}
int main() {
f(1);
f(1.0);
}