Method string>

include/covscript/impl/type_ext.hpp:624–631

	template <>
	std::intptr_t to_integer<std::string>(const std::string &str)
	{
		for (auto &ch : str) {
			if (!std::isdigit(ch))
				throw cs::runtime_error("Wrong literal format.");
		}
		return std::stol(str);
	}

// Hash
	template <>