convert: remove FromError, use From<E> instead#23879
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This removes the FromError trait, since it can now be expressed using the new convert::Into trait. All implementations of FromError<E> where changed to From<E>, and `try!` was changed to use From::from instead. Because this removes FromError, it is a breaking change, but fixing it simply requires changing the words `FromError` to `From`, and `from_error` to `from`. [breaking-change]
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I'm still building the tests, but I fixed each instance that showed up with grep. |
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Erg, this is hitting coherence errors. I can't have |
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I'm working on resolving that with #23875 I previously hadn't deprecated |
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☔ The latest upstream changes (presumably #23884) made this pull request unmergeable. Please resolve the merge conflicts. |
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This sounds like a great idea to me! I'm all for it (although I'd land it either after or in tandem with #23875) |
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Conflicts: src/libcore/error.rs
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As per rust-lang/rust#23879. Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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As per rust-lang/rust#23879. Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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As per rust-lang/rust#23879. Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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As per rust-lang/rust#23879. Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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As per rust-lang/rust#23879. Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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As per rust-lang/rust#23879. Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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This removes the FromError trait, since it can now be expressed using
the new convert::Into trait. All implementations of FromError where
changed to From, and
try!was changed to use From::from instead.Because this removes FromError, it is a breaking change, but fixing it
simply requires changing the words
FromErrortoFrom, andfrom_errortofrom.[breaking-change]
r? @alexcrichton or @aturon