# rust-lapper
[Documentation](https://docs.rs/rust-lapper)
[Crates.io](https://crates.io/crates/rust-lapper)
This is a rust port of Brent Pendersen's
[nim-lapper](https://github.com/brentp/nim-lapper). It has a few notable
differences, mostly that the find and seek methods both return
iterators, so all adaptor methods may be used normally.
## Example
```rust
use rust_lapper::{Interval, Lapper};
use std::cmp;
type Iv = Interval<u32>;
fn main() {
// create some fake data
let data: Vec<Iv> = (0..20).step_by(5).map(|x| Iv{start: x, stop: x + 2, val: 0}).collect();
println!("{:#?}", data);
// make lapper structure
let laps = Lapper::new(data);
assert_eq!(laps.find(6, 11).next(), Some(&Iv{start: 5, stop: 7, val: 0}));
let mut sim: i32 = 0;
let mut cursor = 0;
// Calculate the overlap between the query and the found intervals, sum total overlap
for i in (0..10).step_by(3) {
sim += laps
.seek(i, i + 2, &mut cursor)
.map(|iv| cmp::min(i + 2, iv.stop) - cmp::max(i, iv.start))
.sum::<i32>();
}
assert_eq!(sim, 10);
}
```