Function assert_no_lets

src/transform/src/normalize_lets.rs:642–646

(expr: &MirRelationExpr)

    }

    pub(crate) fn assert_no_lets(expr: &MirRelationExpr) {
        expr.visit_pre(|expr| {
            assert!(!matches!(expr, MirRelationExpr::Let { .. }));
        });
    }

    /// Asserts that `expr` in "LetRec-major" form.
    ///