Stop requiring error kinds to impl Display #1066
Open
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
All kinds of
error::Error<Kind>
now implement theDisplay
trait, and theDisplay
for theError<Kind>
itself is inherited from itsKind
.The binding between the kind and
Display
is not necessary though.In this commit I dropped the restriction of error kinds by
Display
, and only implemented the trait for errors with displayable kinds. As a result, the developer got 2 options:Display
for the kind (preferred),