#struct-fields #iterator #reflection #proc-macro #derive

field_iterator

A derivable trait for iterating over the fields of a struct

1 unstable release

0.1.0 Apr 10, 2024

#2153 in Rust patterns

MIT license

4KB

Field iterator

Based on the abandoned struct_iterable. The rest of the README is taken from it.

This is meant as a lighter alternative to fields-iter.

How to Use

First, add the crate to your Cargo.toml:

[dependencies]
field_iterator = "0.1.1"

Next, include the library at the top of your Rust file:

use field_iterator::Iterable;

Finally, add the #[derive(Iterable)] attribute to your struct:

#[derive(Iterable)]
struct MyStruct {
    field1: u32,
    field2: String,
    // etc.
}

Now, you can iterate over the fields of an instance of your struct:

let my_instance = MyStruct {
    field1: 42,
    field2: "Hello, world!".to_string(),
};

for (field_name, field_value) in my_instance.iter() {
    println!("{}: {:?}", field_name, field_value);
}

Limitations

  • Only structs with named fields are supported.

Contributing and License

If you're interested in contributing, please feel free to submit a pull request. For major changes, please open an issue first to discuss what you would like to change.

This crate is distributed under an MIT license.

Dependencies

~230–670KB
~16K SLoC