libmf 0.4.0

Large-scale sparse matrix factorization for Rust
Documentation 
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use core::error;
use core::fmt;

/// An error.
#[derive(Debug, Eq, PartialEq)]
pub enum Error {
    Io,
    Node(usize),
    Parameter(&'static str),
    Unknown,
}

impl error::Error for Error {}

impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match *self {
            Error::Io => f.write_str("cannot open file"),
            Error::Node(index) => write!(f, "invalid node at index {}", index),
            Error::Parameter(err) => f.write_str(err),
            Error::Unknown => f.write_str("unknown error"),
        }
    }
}