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std::experi...unction_name(3) C++ Standard Libarystd::experi...unction_name(3) NAME std::experimental::source_location::function_name - std::experimen- tal::source_location::function_name Synopsis constexpr const char* function_name() const noexcept; (library fun- damentals TS v2) Returns the name of the function associated with the position repre- sented by this object, if any. Parameters (none) Return value If this object represents a position in a body of a function, re- turns an implementation-defined null-terminated byte string corresponding to the name of the function. Otherwise, an empty string is returned. Example The following example shows how it is possible to use the std::source_location::function_name() to print a name of a function, constructor, destructor, or overloaded operator(). // Run this code #include <experimental/source_location> #include <iostream> #include <string_view> inline void function_name( const std::string_view signature = "()", const std::experimental::source_location& location = std::experimental::source_location::current()) { std::cout << location.function_name() // <- name of the caller! << signature << '\n'; } void foo() { function_name(); } struct S { S() { function_name(); } S(int) { function_name("(int)"); } S& operator=(S const&) { function_name("(const S&)"); return *this; } S& operator=(S&&) { function_name("(S&&)"); return *this; } ~S() { function_name(); } }; int main() { foo(); S p; S q{42}; p = q; p = std::move(q); } Possible output: foo() S() S(int) operator=(const S&) operator=(S&&) ~S() ~S() See also line return the line number represented by this object (public member function) column return the column number represented by this object (public member function) file_name return the file name represented by this object (public member function) http://cppreference.com 2022.07.31 std::experi...unction_name(3)
NAME | Synopsis | Parameters | Return value | Example | Possible output: | See also
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