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Crystal 0.25.1 released

crystal-lang.org

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Re: Crystal 0.25.1 released

#21

Post by nlh »

Blackstone4 wrote: post #17
everdev wrote: post #11

Earlier quoted context omitted.

I've programmed in both and as far as I can tell here's the best use case for each: Go - I want to program explicitly and don't mind a little extra code or syntax to do it. I want close to the best performance possible and a single distributable binary. I don't mind being encouraged to "roll my own" api / web app rather than using a framework. Crystal - I want to feel like I'm writing in Ruby, but with type checking…

Great response. [EDIT - as highlighted by the replies below you can't use Rails with Crystal...my fault for misreading the parent] I didn't quite realize that I could use Rails with Crystal. That would be make it more interesting if I knew how to use Rails ^^

Unfortunately, you can’t use actual-Rails in Crystal (it’s written in Ruby which is similar but not exactly the same).

But there are Rails-like frameworks you can use in Crystal that are just as much fun (though understandably less mature).

Check out Amber, Lucky, and Kemal to give you an idea of what’s out there.

Re: Crystal 0.25.1 released

#22

Post by theIV »

Blackstone4 wrote: post #17
everdev wrote: post #11

Earlier quoted context omitted.

I've programmed in both and as far as I can tell here's the best use case for each: Go - I want to program explicitly and don't mind a little extra code or syntax to do it. I want close to the best performance possible and a single distributable binary. I don't mind being encouraged to "roll my own" api / web app rather than using a framework. Crystal - I want to feel like I'm writing in Ruby, but with type checking…

Great response. [EDIT - as highlighted by the replies below you can't use Rails with Crystal...my fault for misreading the parent] I didn't quite realize that I could use Rails with Crystal. That would be make it more interesting if I knew how to use Rails ^^

While you can't use Rails, there are frameworks that I have heard are "similar", such as https://luckyframework.org/.

Disclaimer: I haven't used it, just read a bit about it.

Re: Crystal 0.25.1 released

#23

Post by nlh »

MaxBarraclough wrote: post #19
sdogruyol wrote: post #3

Earlier quoted context omitted.

We use Crystal at RainforestQA to replace our heavy-load / slowish Ruby microservices. It's been great so far and we love it. We're also increasing the adoption to Crystal inside the organization. Also Crystal has a dedicated a wiki page for production users Used in production: https://github.com/crystal-lang/crystal/wiki/Used-in-product...

What drew you to Crystal? If you'll forgive the snark, you've moved from one obscure language, to an even more obscure language that even fewer developers know. What is it about Crystal that outweighs the very boring practical downsides of production use of obscure and immature languages?

I think many tens-of-thousands of developers would not agree that Ruby is obscure.

Re: Crystal 0.25.1 released

#24

Post by rhencke »

MaxBarraclough wrote: post #19
sdogruyol wrote: post #3

Earlier quoted context omitted.

We use Crystal at RainforestQA to replace our heavy-load / slowish Ruby microservices. It's been great so far and we love it. We're also increasing the adoption to Crystal inside the organization. Also Crystal has a dedicated a wiki page for production users Used in production: https://github.com/crystal-lang/crystal/wiki/Used-in-product...

What drew you to Crystal? If you'll forgive the snark, you've moved from one obscure language, to an even more obscure language that even fewer developers know. What is it about Crystal that outweighs the very boring practical downsides of production use of obscure and immature languages?

How is Ruby an obscure language...?

Their developers are already proficient in Ruby. Crystal is a very, very close cousin of Ruby, syntactically and structurally. This isn't like jumping from Java to Haskell.

Re: Crystal 0.25.1 released

#25

Post by Blackstone4 »

RX14 wrote: post #9
Blackstone4 wrote: post #5

Crystal looks interesting although I decided to learn Golang instead. It's more mature and the WIP features described below made me cautious (i.e. what other features are immature). Anyone know when Crystal will get concurrency-a-la-golang? i.e. running concurrent processes in parallel? At the moment I think it's still single-threaded. https://crystal-lang.org/docs/guides/concurrency.html Still no windows support: ht…

Crystal has had concurrency, almost identical to goroutines, for a long time. It's just as if you're always running with GOMAXPROCS=1. And you can still get some excellent performance on IO bound workloads with a single core. The challenge is expanding what crystal is already good at to CPU bound parallelizable workloads by implementing parallelism. This work should be done before 1.0, we have a lot more resources to…

Thanks for the response.

I'm no expert but when you have a server, would each request be handled concurrently by a separate thread (/fibre?)? So in that sense would the server's I/O be non-blocking? (I know each thread would be blocked as it waits for the response).

Do you have a rough time frame for parallel concurrency?

What's your view on the maturity of the language?

Re: Crystal 0.25.1 released

#26

Post by RX14 »

MaxBarraclough wrote: post #19
sdogruyol wrote: post #3

Earlier quoted context omitted.

We use Crystal at RainforestQA to replace our heavy-load / slowish Ruby microservices. It's been great so far and we love it. We're also increasing the adoption to Crystal inside the organization. Also Crystal has a dedicated a wiki page for production users Used in production: https://github.com/crystal-lang/crystal/wiki/Used-in-product...

What drew you to Crystal? If you'll forgive the snark, you've moved from one obscure language, to an even more obscure language that even fewer developers know. What is it about Crystal that outweighs the very boring practical downsides of production use of obscure and immature languages?

Probably because they loved the language. Humans are humans, and not everything is made with a rational financial decision. If you use the language, and like ruby and static typing, you'll find that there's a lot to love.

Re: Crystal 0.25.1 released

#27

Post by [deleted] »

MaxBarraclough wrote: post #19
sdogruyol wrote: post #3

Earlier quoted context omitted.

We use Crystal at RainforestQA to replace our heavy-load / slowish Ruby microservices. It's been great so far and we love it. We're also increasing the adoption to Crystal inside the organization. Also Crystal has a dedicated a wiki page for production users Used in production: https://github.com/crystal-lang/crystal/wiki/Used-in-product...

What drew you to Crystal? If you'll forgive the snark, you've moved from one obscure language, to an even more obscure language that even fewer developers know. What is it about Crystal that outweighs the very boring practical downsides of production use of obscure and immature languages?

[deleted]

Re: Crystal 0.25.1 released

#28

Post by nlh »

Thaxll wrote: post #6
sergiotapia wrote: post #2

Anyone using Crystal in production? What do you use it for?

I'm not sure why anyone would actually use it in the current state, unstable, lack of libraries, lack of community and the biggest problem no multi-threading / windows support

I know you’re (effectively) trolling here, but there are many reasons to “actually” use it. The community is great and helpful (check out the Gitter activity if you have any question about that). Lack of Windows support (for now) doesn’t matter if....you don’t use Windows. Multi-threading is being worked on.

You’re rehashing the same 2 things many folks point out that Crystal is missing in its pre-1.0 state and while they’re obviously important for widespread adoption, they’re not reason in and of themselves to dismiss a language that’s otherwise super interesting to many.

Re: Crystal 0.25.1 released

#29

Post by sam0x17 »

Blackstone4 wrote: post #17
everdev wrote: post #11

Earlier quoted context omitted.

I've programmed in both and as far as I can tell here's the best use case for each: Go - I want to program explicitly and don't mind a little extra code or syntax to do it. I want close to the best performance possible and a single distributable binary. I don't mind being encouraged to "roll my own" api / web app rather than using a framework. Crystal - I want to feel like I'm writing in Ruby, but with type checking…

Great response. [EDIT - as highlighted by the replies below you can't use Rails with Crystal...my fault for misreading the parent] I didn't quite realize that I could use Rails with Crystal. That would be make it more interesting if I knew how to use Rails ^^

I would definitely recommend amber. It's probably the most rails-like, and is more mature than other solutions at this point (kemal is more like sinatra, though it is obviously more mature being rather ancient by crystal standards)

Re: Crystal 0.25.1 released

#30

Post by rkeene2 »

k3liutZu wrote: post #4
sergiotapia wrote: post #2

Anyone using Crystal in production? What do you use it for?

Let's make this more generic: Anyone using Crystal? What do you use it for?

I do. I run a service called "HashCache" which caches resources by hash ( http://hashcache.rkeene.org/ ). I use this as a central cache for build scripts which download resources from the Internet, and the upstream/origin server may go away.

I wrote a version in Crystal (v0.10, I think) and Tcl to compare the two:

Crystal: https://chiselapp.com/user/rkeene/repository/hashcache/artif...

Tcl: https://chiselapp.com/user/rkeene/repository/hashcache/artif...

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