hash-chain 0.3.2

A tiered hashmap and hashset implementation that allows for easily representing lexically scoped variables
Documentation 
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#[derive(Debug)]
pub enum Error {
    IndexOutOfRange,
}

impl std::fmt::Display for Error {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            Error::IndexOutOfRange => write!(f, "Index out of range"),
        }
    }
}

impl std::error::Error for Error {}