Function numeric

include/covscript/core/components.hpp:292–304

		template <typename T, typename = std::enable_if_t<!std::is_same<std::decay_t<T>, numeric>::value>>
		numeric(T &&dat)
		{
			if (std::is_floating_point<std::decay_t<T>>::value) {
				type = 0;
				data._num = static_cast<numeric_float>(dat);
			}
			else if (std::is_integral<std::decay_t<T>>::value) {
				type = 1;
				data._int = static_cast<numeric_integer>(dat);
			}
			else
				throw runtime_error("Construct numeric with incompatible type.");
		}

		numeric(const numeric &rhs) : data(rhs.data), type(rhs.type) {}