struct_partition_into_iter.rs

struct_partition_into_iter.rs

// https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=f6b6cbb5fedbb3a745ee98fde30c8d06
// A basic struct that holds an array of 16-bit unsigned integers.
struct Numbers([u16; 10]);

// Implement the IntoIterator trait for our Numbers struct.
impl<'a> IntoIterator for &'a Numbers {
    // We want to iterate over references to u16 values.
    type Item = &'a u16;
    // The type of the iterator we're returning.
    type IntoIter = std::slice::Iter<'a, u16>;

    // The method that creates and returns the iterator.
    fn into_iter(self) -> Self::IntoIter {
        self.0.iter()
    }
}

fn main() {
    let numbers = Numbers([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
    let (evens, odds): (std::vec::Vec<u16>, std::vec::Vec<u16>) =
        numbers.into_iter().partition(|&n| n % 2 == 0);
    for n in &evens {
        println!("even:{}", n);
    }
    for n in &odds {
        println!("odd:{}", n);
    }
    for n in &numbers {
        println!("numbers:{}", n);
    }
}

https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=f6b6cbb5fedbb3a745ee98fde30c8d06