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C? Go? Cgo

blog.golang.org

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Re: C? Go? Cgo

#11

Post by remogatto »

vaporstun wrote: post #2

Just curious, and I apologize if this sounds snarky, that's not my intent, but is anyone here actually using Go for anything? If so, what?

I'm using it to write a ZX Spectrum emulator. Go is a neat language. It is expressive as an high-level language and - at the same time - it is powerful on the low-level side. Moreover, it has interesting built-in concurrency mechanisms. Last but not least, I like the fact that it is openly developed.

Re: C? Go? Cgo

#13

Post by ori_b »

old-gregg wrote: post #8
vaporstun wrote: post #2

Just curious, and I apologize if this sounds snarky, that's not my intent, but is anyone here actually using Go for anything? If so, what?

I've been patiently waiting for them to target shared libraries, so I could use it from inside of many different VMs or/and servers, from ruby/python/jvm to apache/nginx. Frankly I just don't see a need for Go executables. What will I do with them? Run in bash?

Communicate with them via IPC.

Re: C? Go? Cgo

#14

Post by gnuvince »

supersillyus wrote: post #10
vaporstun wrote: post #2

Just curious, and I apologize if this sounds snarky, that's not my intent, but is anyone here actually using Go for anything? If so, what?

I've written a few thousand lines. A couple toy VMs/compilers, some web apps, some random graphical tinkering. Nothing big, but enough to feel like I've gotten a sense of the language. I started using it expecting to be annoyed by all of the features it doesn't have, but I ended up really liking it and not really missing much. It has become my go-to language for random tinkering and prototyping, in part because I alw…

Has the absence of generic types been a problem for you?

Re: C? Go? Cgo

#16

Post by exch »

gnuvince wrote: post #14
supersillyus wrote: post #10

Earlier quoted context omitted.

I've written a few thousand lines. A couple toy VMs/compilers, some web apps, some random graphical tinkering. Nothing big, but enough to feel like I've gotten a sense of the language. I started using it expecting to be annoyed by all of the features it doesn't have, but I ended up really liking it and not really missing much. It has become my go-to language for random tinkering and prototyping, in part because I alw…

Has the absence of generic types been a problem for you?

For me this was something I missed when I started with Go about a year ago (at that point my brain was still filled with years of C# dogma). I was not very familiar with Go's own way of doing things back then. Go may seem familiar at first glance, but there are some peculiar little differences which offer new and novel ways of dealing with a problem. Unfortunately these are very difficult to explain to someone who is not already familiar with the language.

At this point I don't miss generics at all. The benefit they would give me are marginal enough to not consider it a vital component.

I've found that when you become proficient in Go, you will write different code that does not really require generics to be present. At least 99% of the time.

Having said that, I am still hoping that we might one day get unions. Unfortunately there is little hope of that at this point. It has been considered, but they would have to be type-safe in order not to circumvent Go's type system. And doing so, would differentiate them very little from Go's existing 'interface{}' type. There is a small benefit to unions, but apparently not big enough to warrant implementing them.

As far as generics go, they are not out of the question. The problem so far has been that nobody has yet offered a generics proposal that doesn't partially or completely mess up the language and generally make things more difficult for everyone.

Re: C? Go? Cgo

#18

Post by timtadh »

vaporstun wrote: post #2

Just curious, and I apologize if this sounds snarky, that's not my intent, but is anyone here actually using Go for anything? If so, what?

I have written BTrees and B+Trees in Go[1]. I wrote a Top Down Predictive Parser[2]. Currently a friend and I are writing a distributed network simulation.[3] I also maintain a fork of the gobuild project (a build system for go) which I have modified for my purposes.[4]

Written ~10k lines in total maybe more. I like the language. However, it has its limitations.

[1] https://github.com/timtadh/Go-Filestructures

[2] https://github.com/timtadh/tdpp

[3] https://github.com/timtadh/Tecellate

[4] https://github.com/timtadh/gobuild-fork

Re: C? Go? Cgo

#19

Post by smtf »

sambeau wrote: post #6
vaporstun wrote: post #2

Just curious, and I apologize if this sounds snarky, that's not my intent, but is anyone here actually using Go for anything? If so, what?

I use it for everything these days. I've written numerous web apps and we publishing apps as well as a few prototype game servers. It's a joy to program in.

Care to elaborate a little? I'll settle for links to previous posts if you have them.

Re: C? Go? Cgo

#20

Post by jbarham »

vaporstun wrote: post #2

Just curious, and I apologize if this sounds snarky, that's not my intent, but is anyone here actually using Go for anything? If so, what?

Some open source things I've written in Go:

- A port from C of a fast prime number generator: https://github.com/jbarham/primegen.go

- A Cdb ("constant database") implementation: https://github.com/jbarham/cdb.go

- A Cgo PostgreSQL wrapper: https://github.com/jbarham/pgsql.go

- The beginnings of an AWS library: http://code.google.com/p/goaws/

Regarding the OP, Cgo is like magic since e.g. my PostgreSQL libpq wrapper provides a pretty rich PostgreSQL driver for Go in well under 400 LOC. Best of all, I can write most of it in pure Go itself! The grungy low-level C interface code is mostly auto-generated.

http://news.ycombinator.com/item?id=2335228 is another comment I made about programming in Go.

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