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Re:Rust's 2017 Roadmap by tatterdemalion on Tuesday February 07, 2017 @05:38AM (#13588468)
> Oh, I guess the case of this I encountered most recently was actually Option<String> == Option<&str>.

There are pretty rough type inference issues preventing this impl from existing. Too many people are doing `opt == None` & the compiler would no longer be able to infer the type of None. (You should not be one of them, just call `is_none()` instead)

I'd like to see this impl some day but its not clear how to make it happen.

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