this post was submitted on 14 Aug 2023
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As your future colleague wondering what the hell that variable is for, thanks Go.
I prefer for it to be just a warning so I can debug without trouble, the build system will just prevent me from completing the pull request with it (and any other warning).
Changing it will bring down the entire system.
We've spent ten million dollars and do not know why.
Isnt the syntax highlighting it as mever used?
So why would they wonder?
If it is a pure value, I'd assume yes, but if it is tied to a side effect (E.g. write its value to a file), then it would be not used but still could break your app if removed.
I'm not familiar with rust language specifically, but generally that's what could happen
A quick "find all references" will point out it's not used and can be deleted if it accidentally gets checked in but ideally, you have systems in place to not let it get checked into the main branch in the first place.
Yeah that should be looked for in a CI line check, not a compilation requirement
You mean a system like the compiler
Or a linter. Or code reviews. Or anything else. The nice thing is that if the compiler doesn't demand something, it can be given to the engineer as an option. The compiler should have the option to do it. The option could even be defaulted on. Afaik there is no way in Golang to disable that error (this is the line that does it: https://github.com/golang/go/blob/04fb929a5b7991ed0945d05ab8015c1721958d82/src/go/types/stmt.go#L67-L69). like --no-pedantics or such. Golang's compiler openly refuses to give engineers more choices in what they think is the best system to handle it.
Who needs an option to leave unused variables around the code base? Lazybones?
You've literally never commented out a line or two but left the variable declaration while debugging?
Yeah any compiler should support environments or config files. Our CI would never work with without
--env “stage”