merkle_test 0.1.0

Merkle tree test task
Documentation 
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use std::fmt;
use std::error::Error;


#[derive(Debug, PartialEq)]
pub enum MerkleTreeError {
    NotEnoughHashes,
}
impl fmt::Display for MerkleTreeError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}", self.description())
    }
}
impl Error for MerkleTreeError {
    fn description(&self) -> &str {
        match *self {
            MerkleTreeError::NotEnoughHashes => "For calculate root hash minimum 2 hashes required",
        }
    }
    fn cause(&self) -> Option<&Error> {
        None
    }
}