Crystal 0.34

I guess AOT compiled jRubby/TruffleRuby.

I suppose the obvious answer is web back-ends, though that is true of practically every language.

Do you mean rails as in the framework people with choose crystal for? (It doesn't) Or a rails-like web framework in general? (it has https://amberframework.org/ )

It would be nice if we could use the C FFI to allow seamless interaction between MRI ruby and Crystal.

Allowing us to profile and easily port parts of an existing rails or ruby app would be really useful.

Does Java have a Rails?

Crystal has Lucky and Amber — both are reasonable for small fun projects. They're still missing what makes Rails Rails, though. Rails is much more than MVC. It's the Ruby ecosystem and the tooling that really allow Rails to become what it is, and that is hyper-productive. You don't spend time reinventing the wheel, you spend time working on domain-specific problems.

Sure, chicken vs egg, but while everyone is hopping from language to language, framework to framework, packaging system to packaging system because they saw it on Reddit or HN, I'll be over here shipping Ruby and contributing to the Crystal ecosystem in my spare time.

I have just updated my Scheme interpreter in Crystal (https://github.com/nukata/little-scheme-in-crystal), which I used on the above benchmark test, along to Crystal 0.34.

The release notes of Crystal 0.34 say "Having as much as possible portable code is part of the goal of the std-lib. One of the areas that were in need of polishing was how Errno and WinError were handled. The Errno and WinError exceptions are now gone, and were replaced by a new hierarchy of exceptions." So I have modified

    rescue ex: Errno
      raise ErrorException.new(ex.message, NONE) if ex.errno == Errno::EPIPE

to

    rescue ex: IO::Error
      raise ErrorException.new(ex.message, NONE) if ex.os_error == Errno::EPIPE

though it is still dependent on POSIX. >_<

Links don't imply that something shouldn't have been posted! They are just for curious readers to explore further. It's a way of sharing the riches of HN's archives.

Sometimes I spell this out explicitly: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que.... But it gets tedious to keep repeating. I'm still looking for a brief, unambiguous wording that doesn't lead to misunderstanding.

(Separately, it's true that HN normally shouldn't have a new front page thread for each incremental release of a project, because there are many more of those than there are slots on the front page. Users tend to upvote them reflexively as a sort of referendum on projects they like, and the threads is almost always a discussion of the project in general rather than of the specifics of a release. Those do get repetitive. But I wasn't implying anything about that with links.)

How is this an innovation? Kotlin and C# are probably faster on average. Also Kotlin can be native