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std::experi...unction_name(3)  C++ Standard Libary std::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  funda-
     mentals 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, returns 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)
	C++ documentation for
	Filename and line information

http://cppreference.com 	   2024.06.10	   std::experi...unction_name(3)
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