HashMap storing values as multiple types

[jofas]

See this answer for an outline of your get_value method:

Is it possible to get the enum field directly according to the generic type

There's no need for unsafe; trait Any provides downcast_ref to encapsulate the pattern. pub fn get<T: 'static>(&self) -> Option<&T> { let x: &dyn Any = match self { Self::A(x) => x, Self::B(x) => x, Self::C(x) => x, }; x.downcast_ref() }