Yeah, I've never seen an all-in-one language like Go before. Not just a huge stdlib where you don't have to vet the authors on github to see if you'll be okay using their package, but also a huge amount of utility built in like benchmarking, testing, multiple platforms, profiling, formatting, and race-detection to name a few. I'm sad they still allow null, but they got a lot right when it comes to the tools.
Everything is literally built-in. It's the perfect scripting language replacement with the fast compile time and tiny language spec (Java 900 pages vs Go 130 pages) making it easy to fully train C-family devs into it within a couple weeks.
Oh Go with Rust's result/none setup and maybe better consts like in the article would be great.
Too ba null/nil is to stay since no Go 2.
Or maybe they would? Iirc 1.21 had technically a breaking change related to for loops. If it was just possible to have migration tooling. I guess too large of a change.
Technically, with generics, you could get a Result that is almost as good as Rust, but it is unidiomatic and awkward to write:
type Result[T, E any] struct {
Val T
Err E
IsErr bool
}
type Payload string
type ProgError struct {
Prog string
Code int
Reason string
}
func DoStuff(x int) Result[Payload, ProgError] {
if x > 8 {
return Result[Payload, ProgError]{Err: ProgError{Prog: "ls", code: 1, "no directory"}}
}
return Result[Payload, ProgError]{Val: "hello"}
}
This was not the case for a long time. Actually it seems like it's fairly recently you get native AOT and trimming to actually reduce build sizes and build time. Otherwise all the binaries come with a giant library
Even back in .NET Core 3.1 days C# had more than competitive performance profile with Go, and _much_ better multi-core scaling at allocation-heavy workloads.
It is disingenuous to say that whatever it ships with is huge also.
The common misconception by the industry that AOT is optimal and desired in server workloads is unfortunate. The deployment model (single slim binary vs many files vs host-dependent) is completely unrelated to whether the application utilizes JIT or AOT. Even with carefully gathered profile, Go produces much worse compiler output for something as trivial as hashmap lookup in comparison to .NET (or JVM for that matter).
Everything is literally built-in. It's the perfect scripting language replacement with the fast compile time and tiny language spec (Java 900 pages vs Go 130 pages) making it easy to fully train C-family devs into it within a couple weeks.