nstack

nstack is a stack-like merkle datastructure for storing and accessing indexed values.

Operations supported are add and remove at the end of the structure, and mutable access to indexed leaves.

Usage example

use kelvin::{annotations::Cardinality, Blake2b};

let n: usize = 256;
let mut nt = NStack::<_, Cardinality<u64>, Blake2b>::new();

for i in 0..n {
    nt.push(i).unwrap();
}

// get a mutable reference to the 128'th element

let element = &mut *nt.get_mut(128).unwrap().unwrap();