@ -20692,6 +20692,9 @@ Where desirable, they can be "instrumented" with additional functionality (e.g.,
These Guidelines assume a `variant` type, but this is not currently in GSL.
These Guidelines assume a `variant` type, but this is not currently in GSL.
Eventually, use [the one voted into C++17](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0088r3.html).
Eventually, use [the one voted into C++17](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0088r3.html).
Some of the types listed below may not be supported in the library you use due to technical reasons such as limitations in the current versions of C++.
Therefore, please consult your GSL documentation to find out more.