3 releases
0.1.2 | Jun 7, 2023 |
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0.1.1 | Jun 7, 2023 |
0.1.0 | Jun 7, 2023 |
#2383 in Rust patterns
8KB
133 lines
easy-conv
Cut down on trivial impl From<A> for B
boilerplate code.
Quick start
Ever tired of code that looks like this?
enum Choices {
Alpha(TypeA),
Bravo(TypeB),
Charlie(TypeC),
}
impl From<TypeA> for Choices {
fn from(val: TypeA) -> Self {
Choices::Alpha(val)
}
}
impl From<TypeB> for Choices {
fn from(val: TypeB) -> Self {
Choices::Bravo(val)
}
}
impl From<TypeC> for Choices {
fn from(val: TypeC) -> Self {
Choices::Charlie(val)
}
}
How about this?
enum Choices {
Alpha(TypeA),
Bravo(TypeB),
Charlie(TypeC),
}
newtype_wrap!(Choices, Alpha, TypeA);
newtype_wrap!(Choices, Bravo, TypeB);
newtype_wrap!(Choices, Charlie, TypeC);
Better? I certainly think so.
There are also newtype_wrap_from_any
and chained_into
macros, which each does
their quirky little thing. See documentation.
Contributing
If you have any other type conversion needs that involve a lot of boilerplate code, please feel free to raise an issue (or better yet, a PR). Maybe we can add a macro to make life easier for you and everyone else.