Little library to support access to C++17 type-safe union types - std::variant and std::any.

Library provides two macros:

• typeswitch([variant|any]) - analogue to C++ switch. Break statement works but you should not use it to prevent fallthrough (this library does not support this feature of C++ switch).
• typecase(type, name) - If type is holded name is reference to holded type and code after is executed. Should be followed by single statement or compound statement.

std::variant<int, std::string> variant;
typeswitch (variant) {
	typecase(int, val): std::cout << "I'm holding int of value: " << val << '\n';
	typecase(std::string, str): 
		std::cout << "I'm holding std::string of value: " << std::quoted(str) << '\n';
}

• add constexpr compatibility for std::variant access

This code is distributed under the MIT license. See LICENSE for details.