Trait splop::IterStatusExt[−][src]

pub trait IterStatusExt: Iterator + Sized {
    fn with_status(self) -> WithStatus<Self>;
}

Adds the with_status method to all iterators.

Required Methods

Important traits for WithStatus<I>

impl<I: Iterator> Iterator for WithStatus<I> type Item = (I::Item, Status);

`fn with_status(self) -> WithStatus<Self>`

Creates an iterator that yields the original items paired with a status, which tells you if the item is the first and/or last one.

The new iterator's item has the type (Self::Item, Status). See Status for detailed information. The new iterator uses peekable() internally, so if the next() call of the underlying iterator has side effects, those will be visible earlier than expected.

Example

use splop::IterStatusExt;


let mut s = String::new();
let names = ["anna", "peter", "bob"];

for (name, status) in names.iter().with_status() {
    if !status.is_first() {
        s += ", ";
    }

    s += name;
}

assert_eq!(s, "anna, peter, bob");

Implementors

impl<I: Iterator> IterStatusExt for I
[src]