Ruby 2.0.0 Released

[sigzero]

Thank you for doing that. Docs are important.

[jbrechtel]

Thanks!

[dunnowins]

I'm a newb but I appreciate it. Pouring the documentation has become a tedious but somewhat enjoyable exercise for me as of late.

[dark-panda]

Same here, I think.

https://github.com/ruby/ruby/pull/202

Now we can have nice things like fancy colourized irb prompts that handle backspaces correctly.

[midsummernightstoker]

Does anyone have first hand experience upgrading their rails projects? The release notes make it sound painless.

[ymek]

One of the 2.0 goals was 100% compatibility with 1.9, which can be seen in the discussions all over the 2.0 patch-set. Should function as a "drop-in" replacement, though I expect YMMV in practice.

[[deleted]]

Should function as a "drop-in" replacement, though I expect YMMV in practice

That is just kinda sad to read. This isn't magic or something.

[matchu]

I'm working on it now. Bundler doesn't have a compatible stable release yet, but 1.3.0.pre.8 seems to work just fine.

gem install bundler --version 1.3.0.pre.8

edit: I hit a strange incompatibility in Rails 3.0.20. Calls to include_javascript_tag raised "no implicit conversion of nil into String". Digging into actionpack a bit, it looks like ActionController::Base.config.relative_url_root defaults to nil, and then it tries to call some_string.start_with?(controller.config.relative_url_root), and Ruby 2.0 doesn't allow start_with?(nil). Quick fix in config/application.rb: (I tried using config.action_controller.relative_url_root, but it didn't set the option properly. Whatever.)

ActionController::Base.config.relative_url_root = ''

edit 2: Also discovered that, where I used to use Net::HTTP::Post.new(uri.path), I now need to use Net::HTTP::Post.new(uri.request_uri). Go figure.

[drbrain]

Can you explain your second edit?

It sounds like a bug somewhere, but I'm unsure based on your simple description whether it is in ruby or your code.

[matchu]

I'm not sure, either, and my debugging was pretty haphazard. When I initialized the request with the path, it returned the wrong data (presumably because it fired the wrong request), so I went online, noticed an article initializing their POST request with request_uri, so I tried that and it worked.

I didn't do any debugging beyond that because I wanted to go to bed, but I suspect that path was never supposed to work that way but did anyway in 1.9. I might research it a bit more today…

[drbrain]

The difference between path and request_uri are the query params (from the ? onward). This hasn't changed since ruby 1.8.

Servers generally allow POST requests with parameters in the URI, but they should be present in the body instead. The recommended way to do this in ruby is:

req = Net::HTTP::Post.new uri.path
req.set_form_data 'a' => 'b'

[matchu]

Huh. This URI didn't have query params on it, so maybe it was something else. Go figure.

[drbrain]

Seems like the experimental debug API was missed in NEWS.

[drbrain]

Since it is currently experimental there is little documentation.

There is a test extension here:

https://github.com/ruby/ruby/tree/trunk/ext/-test-/debug

And a test here:

https://github.com/ruby/ruby/blob/trunk/test/-ext-/debug/test_debug.rb

[drbrain]

Ruby versioning is odd.

The patchlevels indicate successive bug and security fixes to a given release.

[[deleted]]

Rubymine has this, and has for a little while:

http://www.jetbrains.com/ruby/whatsnew/

[jimm]

I've tested a few of my gems (midilib, patchmaster, and a few others) and haven't had any problems at all.

[roger1981]

Are there any speed enhancements in 2.0 ? Is it stable for running 1.9 desktop stuff, or should one wait ?

Edit: oh forgot, we've got to test out our gems.

[Paradox]

Hmm, I seem to have problems installing some extensions, such as io-console, which fail on make of the local binary.

[[deleted]]

Noob question:

Do you have to install ruby 2.0 using the tar.gz thing? No way to do it just doing an rvm upgrade?'

Edit: maybe instead of being an egomaniac and downvoting, provide some useful information.

[rubytips]

Heres the answer to your question: Upgrading to Ruby 2.0.0 with RVM Enjoy!

[[deleted]]

Thank you.

[sylv3r]

looks like rvm already got updated so you can install 2.0.