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https://github.com/Lucretiel/autodefault
Autodefault automatically makes your struct literals fill themselves with `..default()`
https://github.com/Lucretiel/autodefault
Last synced: 9 days ago
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Autodefault automatically makes your struct literals fill themselves with `..default()`
- Host: GitHub
- URL: https://github.com/Lucretiel/autodefault
- Owner: Lucretiel
- License: mpl-2.0
- Created: 2021-04-10T02:27:31.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2021-04-11T02:31:50.000Z (over 3 years ago)
- Last Synced: 2024-10-31T22:04:22.148Z (13 days ago)
- Language: Rust
- Size: 15.6 KB
- Stars: 72
- Watchers: 4
- Forks: 2
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
[](https://crates.io/crates/autodefault) [](https://crates.io/crates/autodefault) [](http://docs.rs/autodefault)
# autodefault
A library that automatically inserts `..Default::default()` for you.
## The pitch
Has this ever happened to you?
```rust
#[derive(Debug, Default, PartialEq, Eq)]
struct Inner {
x: i32,
y: i32,
z: i32,
}
#[derive(Debug, Default, PartialEq, Eq)]
struct Mid {
a: Inner,
b: Inner,
c: Inner,
d: Inner
}
#[derive(Debug, Default, PartialEq, Eq)]
struct Outer {
mid1: Mid,
mid2: Mid,
mid3: Mid,
mid4: Mid,
}
fn build_outer() -> Outer {
Outer {
mid1: Mid {
a: Inner {
x: 10,
..Default::default() // :D
},
b: Inner {
y: 10,
..Default::default() // :)
},
..Default::default() // :|
},
mid2: Mid {
b: Inner {
z: 10,
..Default::default() // :/
},
..Default::default() // :(
},
..Default::default() // >:(
}
}
```
Wouldn't it be nice if you could omit all the tedious `..Default::default()` calls when building deeply nested struct literals? Now you can! With `autodefault`, it's never been easier to build up a large struct literal for your tests, [bevy](https://bevyengine.org/) components, or anything else you might need!. Simply tag any function with the `#[autodefault]` attribute and let us handle the rest:
```rust
use autodefault::autodefault;
#[autodefault]
fn build_outer_simple() -> Outer {
Outer {
mid1: Mid {
a: Inner { x: 10 },
b: Inner { y: 10 },
},
mid2: Mid {
b: Inner { z: 10 },
}
}
} // :O
assert_eq!(build_outer(), build_outer_simple())
```
It's never been easier! Check out the [reference documentation](http://docs.rs/autodefault) for more details.