Method invoke_with_args

datafusion/functions/src/unicode/substr.rs:119–121

(&self, args: ScalarFunctionArgs)

    }

    fn invoke_with_args(&self, args: ScalarFunctionArgs) -> Result<ColumnarValue> {
        make_scalar_function(substr, vec![])(&args.args)
    }

    fn aliases(&self) -> &[String] {
        &self.aliases