whiteout
whiteout
provides macros that erase the type of any value into an impl Trait
for a given trait. This gives you a value that can only be use with the methods of that trait, and whose type is unnameable.
extern crate whiteout;
Since we sometimes want to use these values together, whiteout
provides both a one-time macro and a macro that produces a function which returns a consistent unnameable type, allowing multiple erased values to be used in conjunction. See the documentation for more info.