I'm used to `err != nil`, but it doesn't mean I like it. It's a lot of what amounts to boilerplate in a language that is mercifully short of boilerplate elsewhe

I'm used to `err != nil`, but it doesn't mean I like it. It's a lot of what amounts to boilerplate in a language that is mercifully short of boilerplate elsewhere. This is doubly true when you want custom error types, and need to start unpacking values from your custom error struct.