Update 19-5 to demonstrate returning a closure using impl Trait #3536
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return closures in addition to boxed trait objects
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Ah, thank you for opening this! I just found this as I am trying to burn down our long list of open issues and PRs, and I tackled the same gap in a slightly different way in #4152. Closing this accordingly, but we really do appreciate the contribution! |
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Adds a second listing to 19-5 to demonstrate returning a closure using the
impl Traitreturn type syntax instead of a boxed trait object. The demo compiler error even mentions the feature, so this fits in quite nicely.