spans

This crate allows you to split an iterator into contiguous spans.

Import the Spans trait to extend Iterator:

rust use spans::Spans;

Now you can use Spans::spans_by_key to split an iterator into contiguous spans:

```rust let vec = vec![1, 2, 5, 6, 7, 11, 13, 14, 15]; let mut spans = vec.iter().spansbykey(|&&x| x, |a, b| a + 1 == b);

while let Some(span) = spans.next() { println!("span = {:?}", span.collect::>()); } ```

The code above splits the vector into spans where each item is 1 larger than the proceeding item. The following text is printed:

text span = [1, 2] span = [5, 6, 7] span = [11] span = [13, 14, 15]

Many thanks to Matt Brubeck for helping me so generously on the Rust users forum.