1use std::fmt::Display; 2 3pub enum Error { 4 TaskNotFound, 5} 6 7impl Display for Error { 8 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { 9 match self { 10 Error::TaskNotFound => write!(f, "Task Not Found"), 11 } 12 } 13}