Trait Iterable

pub trait Iterable {
    // Required method
    fn iter(&self) -> IntoIter<(&'static str, &(dyn Any + 'static))>;
}

The Iterable trait.

This trait is implemented for structs that derive the Iterable proc macro. It provides the iter method which returns an iterator over the struct’s fields as tuples, containing the field name as a static string and a reference to the field’s value as dyn Any.

You usually don’t need to implement this trait manually, as it is automatically derived when using the #[derive(Iterable)] proc macro.

Example

use struct_iterable::Iterable;

#[derive(Iterable)]
struct MyStruct {
    field1: i32,
    field2: String,
}

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

// Iterate over the fields of `my_instance`:
for (field_name, field_value) in my_instance.iter() {
    println!("{}: {:?}", field_name, field_value);
}

Required Methods

fn iter(&self) -> IntoIter<(&'static str, &(dyn Any + 'static))>

Returns an iterator over the struct’s fields as tuples.

Each tuple contains a field’s name as a static string and a reference to the field’s value as dyn Any.

Example

use struct_iterable::Iterable;

#[derive(Iterable)]
struct MyStruct {
    field1: i32,
    field2: String,
}

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

// Iterate over the fields of `my_instance`:
for (field_name, field_value) in my_instance.iter() {
    println!("{}: {:?}", field_name, field_value);
}

Implementors

impl Iterable for UnusedType