pub fn is_error(&self) -> bool {
        let exec_results = self
            .exec_results
            .last()
            .expect("Expected to be called after run()");
        let exec_result = exec_results
            .get(0)
            .expect("Unable to get first execution result");
        exec_result.is_failure()
    }
/// Returns `true` if the las exec had an error, otherwise returns false.
Returns `true` if the las exec had an error, otherwise returns false.
Returns ` true ` if the las exec had an error otherwise returns false .
pub fn is_error(&self) -> bool {
        let exec_results = self
            .exec_results
            .last()
            .expect("Expected to be called after run()");
        let exec_result = exec_results
            .get(0)
            .expect("Unable to get first execution result");
        exec_result.is_failure()
    }
pub fn is_error ( & self ) -> bool { let exec_results = self . exec_results . last ( ) . expect ( " " ) ; let exec_result = exec_results . get ( 0 ) . expect ( " " ) ; exec_result . is_failure ( ) }
Returns `true` if the las exec had an error, otherwise returns false.
Returns ` true ` if the las exec had an error otherwise returns false .
&self
&self