Nick Cameron added 3 commits
August 8, 2016 14:05
Allows use with `Option` and custom `Result`-like types.
The dummy impl should ensure the same type checking behaviour as having other (real) Carrier impls.
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Aug 21, 2016
Carrier trait (third attempt) This adds a `Carrier` trait to operate with `?`. The only public implementation is for `Result`, so effectively the trait does not exist, however, it ensures future compatibility for the `?` operator. This is not intended to be used, nor is it intended to be a long-term solution. Although this exact PR has not been through Crater, I do not expect it to be a breaking change based on putting numerous similar PRs though Crater in the past. cc: * [? tracking issue](#31436) * [previous PR](#35056) * [RFC issue](rust-lang/rfcs#1718) for discussion of long-term Carrier trait solutions. r? @nikomatsakis
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