Rust, Design Patterns, Matrix Factorization, Numerical Methods, Software Engineering.
Display }; use std::error::Error; #[derive(Debug)] enum MyStructDefinitionError { VariableOneIsIllDefined, VariableTwoIsIllDefined, } impl Display for MyStructDefinitionError { fn fmt(&self, f: &mut Formatter) -> fmt::Result { match *self { MyStructDefinitionError::VariableOneIsIllDefined => {