# Feluments

A macro to provide optional arguments to Rust.

This crate works by providing a derive macro to implement builders for structs,
and also providing a macro as a shorthand for builders.

```rust
use feluments::*;

#[derive(Debug, PartialEq, Eq, Builder)]
#[builder(vis = pub)]
struct Foo {
    #[builder(default = 45)]
    x: i32,
    #[builder(into)]
    y: String,
    #[builder(optional)]
    z: ()
}

build!(Foo { x: 32, y: "baz" }),
```

The above `build!` macro expands to the following:

```rust
Foo::builder().x(32).y("baz").build()
```

Although this library provides a `Builder` derive macro to make the `build!`
macro work, the `build!` macro is also compatible with other builder crates,
such as [bon](https://bon-rs.com/), [buildstructor](https://crates.io/crates/buildstructor),
or [typed-builder](https://crates.io/crates/typed-builder).

## Contributing

To contribute to this codebase, send your patch file to `botahamec@outlook.com`.