1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
use std::fmt; #[derive(Debug)] pub enum Error { TransformNotInvertible, EmptyArray, UnsupportedArrayShape, } impl fmt::Display for Error { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match self { Self::TransformNotInvertible => write!(f, "transform is not invertible"), Self::EmptyArray => write!(f, "empty array"), Self::UnsupportedArrayShape => write!(f, "unsupported array shape"), } } } impl std::error::Error for Error {}