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Notable Features: - Named arguments - Multiple inheritance (traits) - Incremental performance improvements over 1.9's VM - Better compatibility with no

by tbrock 14y ago

Notable Features: - Named arguments - Multiple inheritance (traits) - Incremental performance improvements over 1.9's VM - Better compatibility with non-unix environments and small/constrained devices (embeddable) - Sandboxed VM's (VM per thread)

pabloh 14y ago
There is no multiple inheritance in ruby 2.0, there are mixins (like traits) tough, but they have being in ruby since I can remember. Also, there won't be MVM (Sandboxed VMs) on this release.
- draegtun 14y ago
  Ruby 2.0 was (and hopefully still) earmarked to have traits which are an enhancement on mixins providing a much better & refined compositional implementation. Thus it (should) allow you to do things like excluding or renaming methods/traits ala Perl roles - https://metacpan.org/module/Moose::Manual::Roles#METHOD-EXCLUSION-AND-ALIASING https://metacpan.org/module/Moose::Manual::Roles#METHOD-EXCL...
  - pabloh 14y ago
    Refinements will be at the 2.0 release but I wouldn't call that feature "multiple inheritance".
    - draegtun 14y ago
      Neither would I because refinements are something completely different to traits! Refinements proposed in Ruby 2.0 allows you to localise monkey-patching much like you can do in Perl with dynamic scoping (for e.g.: http://news.ycombinator.com/item?id=1603321 http://news.ycombinator.com/item?id=1603321 | http://news.ycombinator.com/item?id=3455507 http://news.ycombinator.com/item?id=3455507). For further info on Ruby refinements see here: http://timelessrepo.com/refinements-in-ruby http://timelessrepo.com/refinements-in-ruby Traits are an improvement to mixins. IIRC Matz gave a talk (RubyConf 2010?) where he describes the proposed traits implementation. Here's one set of slides (not Matz's talk) which also shows some traits examples - http://www.slideshare.net/fabiokung/ruby-20-to-infinity-and-beyond http://www.slideshare.net/fabiokung/ruby-20-to-infinity-and-...
lukeholder 14y ago
Half of these are not in ruby 2

by tbrock 14y ago

pabloh 14y ago

There is no multiple inheritance in ruby 2.0, there are mixins (like traits) tough, but they have being in ruby since I can remember. Also, there won't be MVM (Sandboxed VMs) on this release.

draegtun 14y ago
Ruby 2.0 was (and hopefully still) earmarked to have traits which are an enhancement on mixins providing a much better & refined compositional implementation. Thus it (should) allow you to do things like excluding or renaming methods/traits ala Perl roles - https://metacpan.org/module/Moose::Manual::Roles#METHOD-EXCLUSION-AND-ALIASING https://metacpan.org/module/Moose::Manual::Roles#METHOD-EXCL...
- pabloh 14y ago
  Refinements will be at the 2.0 release but I wouldn't call that feature "multiple inheritance".
  - draegtun 14y ago
    Neither would I because refinements are something completely different to traits! Refinements proposed in Ruby 2.0 allows you to localise monkey-patching much like you can do in Perl with dynamic scoping (for e.g.: http://news.ycombinator.com/item?id=1603321 http://news.ycombinator.com/item?id=1603321 | http://news.ycombinator.com/item?id=3455507 http://news.ycombinator.com/item?id=3455507). For further info on Ruby refinements see here: http://timelessrepo.com/refinements-in-ruby http://timelessrepo.com/refinements-in-ruby Traits are an improvement to mixins. IIRC Matz gave a talk (RubyConf 2010?) where he describes the proposed traits implementation. Here's one set of slides (not Matz's talk) which also shows some traits examples - http://www.slideshare.net/fabiokung/ruby-20-to-infinity-and-beyond http://www.slideshare.net/fabiokung/ruby-20-to-infinity-and-...

lukeholder 14y ago

Half of these are not in ruby 2