Splop

This tiny crate contains functions and types to help you do something special when repeating for the first or last time (or in between!). This crate offers two distinct features:

• IterStatusExt::with_status: a new method for iterators, that creates a new iterator which yields the item paired with information to tell you if this is the first/last item.
• SkipFirst: a simple struct to help you always do something, except on the first repetition. Works without iterators, too!

Examples

(also see examples/)

let names = ["anna", "peter", "brigitte", "bob"];

for (name, status) in names.iter().with_status() {
    print!("{}", name);

    if status.is_first() {
        print!(" <-- winner (ᵔᴥᵔ)");
    }
    if status.is_last_only() {
        print!(" ... ʘ︵ʘ");
    }

    println!();
}

The old programming problem – commas in between elements:

let mut comma = SkipFirst::new();

print!("[");
for name in &["banana", "melon", "kiwi"] {
    comma.skip_first(|| print!(", "));
    print!("{}", name);
}

println!("]");

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.