Is there a RFE for this feature and if so, what is it called?

• rust

  2,682 92,831 10.0 Rust

  Empowering everyone to build reliable and efficient software.

  

Every one of those 3 is a sensible feature. Not only is impl Trait on variables consistent with the existing use of impl Trait, but the RFC for it was accepted (https://github.com/rust-lang/rfcs/pull/2071) and the feature is in development (https://github.com/rust-lang/rust/issues/63065). To jump from there to the desired feature only requires the addition of features irrelevant to putting impl Trait on variables.

• rfcs

  666 5,700 9.8 Markdown

  RFCs for changes to Rust

  

Every one of those 3 is a sensible feature. Not only is impl Trait on variables consistent with the existing use of impl Trait, but the RFC for it was accepted (https://github.com/rust-lang/rfcs/pull/2071) and the feature is in development (https://github.com/rust-lang/rust/issues/63065). To jump from there to the desired feature only requires the addition of features irrelevant to putting impl Trait on variables.

• WorkOS

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• either

  3 439 7.3 Rust

  The enum Either with variants Left and Right is a general purpose sum type with two cases.

  

P.S. you can use either to make it work on stable rustc

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