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by maccard 19 days ago
There’s a fine line between being willing to change your mind and getting the basics wrong. Go has repeatedly gotten the basics wrong.
2 comments

Declaring a highly successful language as having the basics wrong means that you are not correct about the basics that were needed.
Something can be highly succesful in spite of having glaring design flaws. Nobody is claiming go isn't wildly succesful, but it's _in spite_ of these issues. It was clear over a decade ago that iota, gopath, and lack of generics were massive kneecaps to the language; go changing it's mind on those things isn't progress it's just getting the fundamentals wrong.

A good example of where they're kind of stuck is date formatting - it's stupid, unclear, and likely a mistake, but it's not a fundamental flaw; it's just a quirk.

Why is iota a massive kneecap to the language? It is semantically identical to enum in C and Typescript.

The trouble is that Rust is older than Go and it was already confusing people into thinking enums and sum types are the same thing, so by using slightly different syntax, iota, Go avoided the whole confusion of users thinking that enums would behave like sum types instead of actual enums.

Is your attempt at making a point that not having sum types is the massive flaw? Sum types are a useful construct, to be sure, but there are plenty of good languages without them. That's more on the design quirk end, realistically.

> Why is iota a massive kneecap to the language? It is semantically identical to enum in C and Typescript.

iota is a massive kneecap _because_ it's semantically identical to enum in C and Typescript.

> Is your argument actually that not having sum types is the massive flaw? Sum types are a useful construct, to be sure, but there are plenty of good languages without them. That's more on the design quirk end, realistically.

In a dream world sure we'd have full blown sum types (and that would give a result type which would also solve a lot of the nil-interface-combined-with-error-handling issues that I've ran into when working with go), but I can forgive that. The problem is this - https://www.zarl.dev/posts/enums

> The problem is this - https://www.zarl.dev/posts/enums

The only case I see made in there is that it doesn't like how Go implicitly converts consts. While that may be a reasonable criticism, it doesn't have anything to do with iota. It is related to the type system and applies in general. Consider the same problem exhibited here:

    type Email string
    func Send(email Email)
    func() { Send("invalid") } // Converted string const does not satisfy Email type expectations
Perhaps you accidentally offered the wrong link?

It was made abundantly clear when Go was released that it was intended to "feel like a dynamically-typed language". Being able to pass arbitrary values is perfectly in line with a dynamically-typed language. Realistically, the type system in Go is there to give the compiler optimization hints, not to offer type safety. Go was targeted at those wanting to use Python, without the programs being painfully slow to run. How much of a kneecap is implicit type conversion, really, when it is already in line with what the target audience is accustomed to? It is a quirk at best.

> It was made abundantly clear when Go was released that it was intended to "feel like a dynamically-typed language".

If I google this quote a comment from you comes up here on this exact topic, where you seem to have completely missed the point there too. If I link to the docs [0], the full quote is "It's a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language. " So it is a statically typed language first and foremost. If you want to rehash the discussion and tell people that a flawed type system that people have been asking for a solution to for close to a decade [1] you can just re-read the last time the arugments were made as I don't think I'm going to make any headway there.

[0] https://go.dev/doc/ [1] https://github.com/golang/go/issues/19814

> Why is iota a massive kneecap to the language? It is semantically identical to enum in C and Typescript.

So is nil. Care to make the same argument?

Typescript has something resembling nil as inherited from Javascript, so presumably that's what you are referring to. C and Javascript are the most widely used languages in existence. Clearly they weren't kneecapped. It mightn't be to your preference, but "I don't like it" would be an atypical use for the word "kneecap".

There is a stronger case to be made for the other two. Calling GOPATH a design mistake is a stretch as it was perfectly suited to use within Google, but it didn't fit the typical solo developer's environment. Lack of generics made writing certain types of code difficult. You could be convincing in suggesting that Go did end up being used less than it otherwise would have because of those choices.

iota? It's just a construct that generates numbers (an enum). How does that kneecap anything? If it really bothers you, you can manually number the values by hand instead. Why would anyone reject a language because it allows you to optionally choose to have the compiler assign numbers automatically instead of forcing you to do it manually? The answer is nobody. In fact, most popular languages have something equivalent to iota.

Nil exists in C and is widely considered to be a massive mistake in the language. An understandable one at the time, but a mistake nonetheless.

Thus “go borrowed it from C, therefore it can’t have been a mistake” is a pretty lame take. The whole point of a new language is to make improvements on what’s out there already. Go missed an opportunity to fix one of C’s most notorious mistakes. So yes, they kneecapped themselves by forcing all of the users of Go to continue dealing with this well-known footgun.

Does it mean Go isn’t popular? Of course not. C was popular. PHP was popular. JavaScript is popular. Go is popular. This is always in spite of their faults. But Go could have been better.

Rust is technically older than Go, but who was actually using it when Go 1.0 came out in 2012? Rust 1.0 wasn’t until 2015.
The social landscape doesn't depend on anyone actually using it. However, 1.0 isn't a significant milestone like you suggest either. For a current example, Zig is relatively popular today despite not yet reaching 1.0.
Do you just forget the things you write in earlier comments?

> Rust is older than Go and it was already confusing people into thinking enums and sum types are the same thing

Of course the social landscape depends on people actually using it. None of the people who weren’t using Rust at the time were magically confused about enums and sum types by the mere existence of some new and experimental language.

Rust barely existed at the time Go was first being developed. And given the history of Go and the notoriety of its core team for flatly ignoring prior work in programming languages, it’s extremely unlikely that Pike et al gave more than a cursory glance to what nascent Rust was doing at the time.

But even if they had, to suggest that they intentionally replicated a dumb thing from C but gave it a different name to avoid users being confused by a different thing from a language that roughly nobody knew about at the time is bananas.

It's a highly successful language because (1) it was backed by Google, and (2) created by Robert Griesemer, Rob Pike, and Ken Thompson.

If it came out of anywhere else, it might have struggled even to hit the homepage here.

This logic is easily shown to not hold. Why isn't Carbon, Dart, etc. not really popular then?
I can't speak about Dart, but Carbon had just barely started development when it was first announced 4 years ago, and is currently presented as an experimental language that is not yet ready for use [0].

0: https://github.com/carbon-language/carbon-lang#project-statu...

Dart was relegated to effectively being Flutter. It was originally intended to supersede JavaScript but no other engine would commit to that. It failed at its initial goal and hasn’t really found a footing outside of Flutter.

Carbon is by its own admittance not ready to use and I think mostly relegated to solving Google’s problems with C++ right now.

Both of them didn’t ship with a standard library as robust as Go’s.

One thing that made Go popular out of the gate is it is extremely good fast to build out robust HTTP services and infrastructure.

This is a very common use case and they tailored Go to be a great fit for it. You can build your entire backend without a single third party module if desired using Go’s standard library and it isn’t terribly complicated to do so.

Its just bitter dorks bitter their pet language with cutting edge programming abstractions didnt make it to the big leagues.
By that logic Windows would be the best operating system ever and perfect in every way, and anyone who disagrees must be wrong about how an OS should be.
And Javascript and Python the best languages.
The basics of a programming language were wrong. The basics of marketing were very right. Those are not the same.
So you mean to say that PHP5 and Js from 2007 had a well-founded design?
Yes, all great examples of language design. PHP, Java, JavaScript, C, C++, Go
An engineer, of course, understands that there is no such thing as "wrong", only different tradeoffs, but with the rise of "vibe coding" you don't need to be an engineer to play in the world of programming anymore.
cough JavaScript cough
Sounds like you want this feature, and you just got it. Not sure how that's wrong. You don't add in every feature from the start.
I wanted it 10 years ago.