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I am excited to see new programming languages like this. I can name 100 duck typed, interpreted, GC'd languages, but only half a dozen native compilers for mode

by vortico 12y ago

I am excited to see new programming languages like this. I can name 100 duck typed, interpreted, GC'd languages, but only half a dozen native compilers for modern languages. Native binaries are much easier to deploy on consumer's desktops than bytecode or source code requiring >50MB VMs, and the code tends to be much more rigid and rigorous with a statically typed language like this. I haven't downloaded the compiler yet, but here are a few things I like after reading the documentation. - The C bindings are nice and simple in Crystal, with full support for structures and data types, - "Globally named" symbols are a really great idea, especially in native binary when compiled to Int32's, - OOP support seems polished with full support for encapsulation, - Basic control structures and scope are also polished and familiar, while leaving beind the nasty parts from Ruby (i.e. `for do` vs `for`, Matz's regret for `do ... while`, etc) - --hierarchy. Why haven't I seen a compiler support this by now? A final point: "Everything is an object" and C-like efficiency seems paradoxical, but I'll look more into this. Objects may be abstracted by the compiler, but once compiled behave like any ole' statically typed system.

cremno 12y ago
>Matz's regret for `do ... while` Huh? Do you mean http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/6745 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/...? It's still there: http://crystal-lang.org/docs/syntax_and_semantics/while.html http://crystal-lang.org/docs/syntax_and_semantics/while.html Edit: Ah, the behavior of the while modifier is different in Crystal.
- vortico 12y ago
  I was referring to the veil of deprecation over `do end while` by Matz's comment that you've linked, but as long as Crystal endorses it, is it fine with me.
  - asterite 12y ago
    We actually started by copying ruby's syntax and semantic, including the `do end while`. But a long time ago we started to diverge from it. We are also not sure about this "feature" and we still have time to remove it from the language :-) . It's true that a simple `while ... break if ... end` is enough. Edit: I also misunderstood the comment. In Crystal `exp while cond` and `begin exp end while cond` are the same.

by vortico 12y ago

cremno 12y ago

>Matz's regret for `do ... while` Huh? Do you mean http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/6745 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/...? It's still there: http://crystal-lang.org/docs/syntax_and_semantics/while.html http://crystal-lang.org/docs/syntax_and_semantics/while.html Edit: Ah, the behavior of the while modifier is different in Crystal.

vortico 12y ago
I was referring to the veil of deprecation over `do end while` by Matz's comment that you've linked, but as long as Crystal endorses it, is it fine with me.
- asterite 12y ago
  We actually started by copying ruby's syntax and semantic, including the `do end while`. But a long time ago we started to diverge from it. We are also not sure about this "feature" and we still have time to remove it from the language :-) . It's true that a simple `while ... break if ... end` is enough. Edit: I also misunderstood the comment. In Crystal `exp while cond` and `begin exp end while cond` are the same.