ac3rm 0.1.1

An incremental AC-3rm propagator in Rust with dynamic assertion and retraction of constraints
Documentation 
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use std::{fmt, ops::Deref};

#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct VarId(usize);

impl VarId {
    pub(crate) fn new(index: usize) -> Self {
        VarId(index)
    }
}

impl Deref for VarId {
    type Target = usize;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

impl fmt::Display for VarId {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "e{}", self.0)
    }
}