Now, more than 8 years after the first commit and almost 5 years after the 0.99.0 release, derive_more has finally reached its 1.0.0 release. This release contains a lot of changes (including some breaking ones) to make it easier to use the derives and make it possible to extend them without having to break backwards compatibility again. There are five major changes that I would like to call out, but there are many more changes that are documented below:
There is a new Debug derive that can be used to easily customize Debug formatting.
A greatly improved Display derive, which allows you to do anything that thiserror provides, but it works for any type not just errors. And by combining the Display derive with the Error and From derives, there shouldn't really be any need to use thiserror anymore (if you are missing a feature/behaviour from thiserror please report an issue).
Traits that can return errors now return a type that implements Error when an error occurs instead of a &'static str.
When using use derive_more::SomeTrait the actual trait is also imported not just the derive macro. This is especially useful for Error and
Display
The docs are now rendered on docs.rs and are much better overall.
Breaking changes
The minimum supported Rust version (MSRV) is now Rust 1.75.
Add the std feature which should be disabled in no_std environments.
All Cargo features, except std, are now disabled by default. The full feature can be used to get the old behavior of supporting all possible derives.
The TryFrom, Add, Sub, BitAnd, BitOr, BitXor, Not and Neg derives now return a dedicated error type instead of a &'static str on error.
The FromStr derive now uses a dedicated FromStrError error type instead of generating unique one each time.
The Display derive (and other fmt-like ones) now uses #[display("...", (<expr>),*)] syntax instead of #[display(fmt = "...", ("<expr>"),*)], and #[display(bound(<bound>))] instead of #[display(bound = "<bound>")]. So without the double quotes around the expressions and bounds.
The Debug and Display derives (and other fmt-like ones) now transparently delegate to the inner type when #[display("...", (<expr>),*)] attribute is trivially substitutable with a transparent call. (#322)
More than 8 years after the first commit and almost 5 years after the 0.99.0
release, derive_more has finally reached its 1.0.0 release. This release
contains a lot of changes (including some breaking ones) to make it easier to
use the derives and make it possible to extend them without having to break
backwards compatibility again. There are five major changes that I would like
to call out, but there are many more changes that are documented below:
There is a new Debug derive that can be used to easily customize Debug
formatting.
A greatly improved Display derive, which allows you to do anything that
thiserror provides, but it works
for any type not just errors. And by combining the Display derive with the
Error and From derives, there shouldn't really be any need to use
thiserror anymore (if you are missing a feature/behaviour from thiserror
please report an issue).
Traits that can return errors now return a type that implements Error
when an error occurs instead of a &'static str.
When using use derive_more::SomeTrait the actual trait is also imported
not just the derive macro. This is especially useful for Error and
Display
The docs are now rendered on docs.rs and are much better overall.
Breaking changes
The minimum supported Rust version (MSRV) is now Rust 1.75.
Add the std feature which should be disabled in no_std environments.
All Cargo features, except std, are now disabled by default. The full
feature can be used to get the old behavior of supporting all possible
derives.
The TryFrom, Add, Sub, BitAnd, BitOr, BitXor, Not and Neg
derives now return a dedicated error type instead of a &'static str on
error.
The FromStr derive now uses a dedicated FromStrError error type instead
of generating unique one each time.
The Display derive (and other fmt-like ones) now uses
#[display("...", (<expr>),*)] syntax instead of
#[display(fmt = "...", ("<expr>"),*)], and #[display(bound(<bound>))]
instead of #[display(bound = "<bound>")]. So without the double quotes
around the expressions and bounds.
The Debug and Display derives (and other fmt-like ones) now transparently
delegate to the inner type when #[display("...", (<expr>),*)] attribute is
trivially substitutable with a transparent call.
(#322)
The DebugCustom derive is renamed to just Debug (gated now under a separate
debug feature), and its semantics were changed to be a superset of std variant
of Debug.
The From derive doesn't derive From<()> for enum variants without any
fields anymore. This feature was removed because it was considered useless in
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Updates the requirements on derive_more to permit the latest version.
Release notes
Sourced from derive_more's releases.
... (truncated)
Changelog
Sourced from derive_more's changelog.
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Commits
d7f5b9e
chore: Release40201b1
Update release date to be correct88863ca
Update changelog wordingb713835
Improve error when not enabling any features330e425
Order features in Cargo.toml alphabetically84f2cbb
Update README and CHANGELOG in preparation of 1.0.0e8d60cf
Add compile_fail test for on purpose limited bounds (#393, #392)f665d18
Make anyhow reference a bit less strong6d632b2
Add release announcement (#390)e87ab13
Don't create git tags for derive_more-impl (#391)You can trigger a rebase of this PR by commenting
@dependabot rebase
.Dependabot commands and options
You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot show