Method binary

src/expr/src/interpret.rs:529–536

(
        &self,
        func: &BinaryFunc,
        left: Self::Summary,
        right: Self::Summary,
    )

    }

    fn binary(
        &self,
        func: &BinaryFunc,
        left: Self::Summary,
        right: Self::Summary,
    ) -> Self::Summary {
        self.evaluator.binary(func, left, right)
    }

    fn variadic(&self, func: &VariadicFunc, exprs: Vec<Self::Summary>) -> Self::Summary {
        self.evaluator.variadic(func, exprs)