Comment by EugeneOZ
10 years ago
Well, usual pattern matching will be even shorter, so I'm talking exactly about cases when lazyness provokes programmer just return that underlying type than write pattern matching or implement trait.
10 years ago
Well, usual pattern matching will be even shorter, so I'm talking exactly about cases when lazyness provokes programmer just return that underlying type than write pattern matching or implement trait.
It would still be true with a simple error code. It's always easier to reuse an existing abstraction (in this case, existing set of codes) than it is to define a new one.
When you write function first time, you don't have set of codes yet. When you write second function, you already have underlying error in use :)