Method eq_only

crates/vm/src/types/slot.rs:1856–1865

(
        self,
        f: impl FnOnce() -> PyResult<PyComparisonValue>,
    )

impl PyComparisonOp {
    pub fn eq_only(
        self,
        f: impl FnOnce() -> PyResult<PyComparisonValue>,
    ) -> PyResult<PyComparisonValue> {
        match self {
            Self::Eq => f(),
            Self::Ne => f().map(|x| x.map(|eq| !eq)),
            _ => Ok(PyComparisonValue::NotImplemented),
        }
    }

    pub fn eval_ord(self, ord: Ordering) -> bool {
        match self {