Method udf

datafusion/expr/src/registry.rs:215–220

(&self, name: &str)

    }

    fn udf(&self, name: &str) -> Result<Arc<ScalarUDF>> {
        self.udfs
            .get(name)
            .cloned()
            .ok_or_else(|| plan_datafusion_err!("Function {name} not found"))
    }

    fn higher_order_function(&self, name: &str) -> Result<Arc<HigherOrderUDF>> {
        self.higher_order_functions