vtk::literals Namespace Reference

Functions
constexpr VTKCOMMONCORE_EXPORT vtkStringToken::Hash	operator""_hash (const char *data, std::size_t size)
	Construct the hash of a string literal, like so: More...
constexpr VTKCOMMONCORE_EXPORT vtkStringToken	operator""_token (const char *data, std::size_t size)
	Construct a token from a string literal, like so: More...

Function Documentation

constexpr VTKCOMMONCORE_EXPORT vtkStringToken::Hash vtk::literals::operator""_hash	(	const char *	data,
		std::size_t	size
	)

Construct the hash of a string literal, like so:

• ```c++ using namespace vtk::literals; vtkStringToken::Hash t = "test"_hash; bool ok = false; switch (t) { case "foo"_hash: ok = false; case "test"_hash: ok = true; } std::cout << t << "\n"; // Prints a hash-code. std::cout << ok << "\n"; // Prints a true value.

• ```

  As the example above shows, it is possible to use hashed strings in switch statements since the hashing occurs at build time. This is more efficient than a sequence of if-conditionals performing string comparisons.

Definition at line 190 of file vtkStringToken.h.

constexpr VTKCOMMONCORE_EXPORT vtkStringToken vtk::literals::operator""_token	(	const char *	data,
		std::size_t	size
	)

Construct a token from a string literal, like so:

• ```c++ using namespace vtk::literals; vtkStringToken t = "test"_token; std::cout << t.id() << "\n"; // Prints a hash-code. // std::cout << t.value() << "\n"; // Prints "test" if someone else constructed the token from a ctor; else throws exception.
• ```

Definition at line 205 of file vtkStringToken.h.