Comment by foldr 9 days ago
Go linters do a pretty good job of spotting where error return values have been ignored, so I'd suggest that the kind of bug the OP is referring to is pretty unlikely to happen in a Go project that's properly configured.
> my question is "why do you need to set up the third party linters when they're so critical to the correctness of your program" really.
No doubt the same reason it is also critical in Haskell (see comment about isLoggedIn function): Developers not knowing what they are doing.
If you work within the idioms and generally accepted programming practices this isn't a problem. It only becomes a problem when you get a developer who wants to "go their own way" without understanding why the norms exist. The linter is a crutch to support their "bad habits".
There’s no simple solution when it comes to ignoring errors. Some errors should be ignored and some shouldn’t. So your only lines of defense are linting heuristics and tests.
I would agree that languages which handle errors via exceptions have an advantage here, as they make not ignoring errors the default behavior. But even then, it’s obviously still possible to indicate error conditions of various kinds via return values, in which case they can still be ignored thoughtlessly. (And you also have all the bugs caused by unhandled exceptions to deal with.)
> Some errors should be ignored and some shouldn’t.
Assuming the function author followed Go conventions, you never need to consider the error for the sake of using the function. Granted, there are some bad developers out there who will do something strange that will come to bite you, but that is not limited to errors (or any particular language).
You may still need the error for your own application requirements, but application requirements are pretty hard to forget. At very least, you are going to notice that your application is missing a whole entire feature as soon as you start using it.
Sure - my question is "why do you need to set up the third party linters when they're so critical to the correctness of your program" really. It's the general "yeah we'll give you these footguns which are the first thing every developer will learn about during their first incident; good luck, and I hope you know you need to do things this way!" attitude I object to.