delta_encoding

Trait DeltaEncoderExt

Source 
pub trait DeltaEncoderExt: Iterator
where
    <Self as Iterator>::Item: Default + Copy + WrappingSub,
{
    // Provided method
    fn deltas(self) -> DeltaEncoderIter<Self> ⓘ
       where Self: Sized { ... }
}

Provided Methods§

Source

fn deltas(self) -> DeltaEncoderIter<Self> ⓘ
where Self: Sized,

Construct a delta-encoded iterator from an iterator. The first element of the iterator is used as the starting point for the delta-encoding. Note that unlike the [DeltaEncoder.encode] method, this method will panic if the delta is too large.

§Example
use delta_encoding::DeltaEncoderExt;

// Consuming original data into a delta-encoded iterator.
let mut encoded: Vec<i64> = vec![1, 2, 5, 4, 2].into_iter().deltas().collect();
assert_eq!(encoded, vec![1, 1, 3, -1, -2]);

// Non-consuming original data, but avoiding the allocation of a new vector.
let mut encoded: Vec<i64> = vec![1, 2, 5, 4, 2].iter().copied().deltas().collect();
assert_eq!(encoded, vec![1, 1, 3, -1, -2]);

Implementors§