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Why Generics?

blog.golang.org

21–30 of 261 posts

Re: Why Generics?

#21
I think another area of Go that could use improvements is a more portable standard library optimised for embedded and OS dev. A lot of people want to use Go as a "systems language" and do drivers etc. in it. But the standard library don't have good support for freestanding, or at least it's not a priority. C and Rust and other languages designed for usage in a non-hosted environment have very clear delineated areas of runtime that requires assembly, manual interfaces for IO/memory allocation etc. Go's runtime by default assumes the presence of an operating system.

Re: Why Generics?

#22
post #2

Personally, I prefer the current interfaces-based solution to generics. It's a little verbose, but keeps the language simple. However, I think that the people we should be listening most are the ones developing huge projects in Go, like Kubernetes. Would having generics with this new contracts thing make it easier to develop and maintain e.g. Kubernetes? I'm truly curious.

Kubernetes is a transpiled Java project, so yeah, Java-like features would definitely make it easier :P

I think idiomatic golang works pretty well without generics in most cases, the big problem for me is that functional programming is essentially impossible without them.

Re: Why Generics?

#26
post #2

Personally, I prefer the current interfaces-based solution to generics. It's a little verbose, but keeps the language simple. However, I think that the people we should be listening most are the ones developing huge projects in Go, like Kubernetes. Would having generics with this new contracts thing make it easier to develop and maintain e.g. Kubernetes? I'm truly curious.

Generics and Interfaces solve different problems

Re: Why Generics?

#27
post #7

Earlier quoted context omitted.

I have yet to find one practical application for generics in the apps I've built in Go.

Every project I’ve written so far in golang could benefit from generics.

but what is the benefit? How does your code change. Generics are a tail abstraction. Its the last abstraction that you are able to make to your code to reduce boilerplate. This usually means that is the least useful and in generics specific case the boiler place it reduces is minimal.

Its lack of impact is why I dont really care about the subject. Adding or removing generics to a project matters little. So why bother complaining. The class creation and encapsulation choices are much more impactful to future code edits.

Re: Why Generics?

#28
Chiming in here as a Swift dev - I find its generics system incredibly helpful and end up writing something that uses generics about once a month. To those Go programmers who think they will never use them - it’s worth a little learning, and once you do you will find more ways to use them to make your code more applicable.

Re: Why Generics?

#29
post #2

Personally, I prefer the current interfaces-based solution to generics. It's a little verbose, but keeps the language simple. However, I think that the people we should be listening most are the ones developing huge projects in Go, like Kubernetes. Would having generics with this new contracts thing make it easier to develop and maintain e.g. Kubernetes? I'm truly curious.

Probably yes: https://medium.com/@arschles/go-experience-report-generics-i...

Many smaller projects would benefit too. I would like to build a typesafe tree for an efficient sorted map, and to be able mergsort over multiple trees of different types. It would allow some extremely useful channel combinators for doing rather common things like safely shutting down a service with some background processing. Often these things leak and a often I find myself spawning more go routines just to map between types or to stop generic interface types infecting the rest of the API.

Re: Why Generics?

#30

why are people obsessed with simplicity? there's a quotation my Einstein that I like to keep in mind: "make things as simple as they can be but no simpler". the implication being that if you make things too simple then you actually break things. lack of generics makes for software that's actually more complex than it needs to be. Take for example Swift: lots of complex features (protocols, all manner of functional tr…

C++ solves all problem that can be solved with Go, but with a lot more features.

Why are we not using C++ where Go is currently being used? By your logic, this shouldn’t be the case.

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