BT

New Early adopter or innovator? InfoQ has been working on some new features for you. Learn more

Releases: JRuby 1.1.2; New Preview of Ruby 1.8.7

| by Werner Schuster on May 28, 2008. Estimated reading time: 1 minute |
Just in time for RailsConf 2008JRuby 1.1.2 was released  (download JRuby 1.1.2 versions).  This maintenance release in the 1.1.x branch consists of bug fixes and some major performance increases.

The startup performance boost (reported previously), is based on the idea to put JRuby .jar files into the bootclasspath - loading classes from the bootclasspath than from the regular classpath is faster because the bytecode doesn't get verified.

Another Ruby runtime release is available in the stable Ruby 1.8.x branch of MRI. Ruby 1.8.7 preview 4 has been released. You can see a rough list of features and API added since 1.8.6 or the full Changelog for MRI.

A quick diff of the new features in Ruby 1.8.7 preview 4 and previous previews, shows some activity and some previously introduced features disappeared and changed again.

A big change is the re-appearance of Symbol#to_proc. The feature made it's first appearance in Ruby 1.9. Ruby 1.8.7 preview 1 included a backported version - which was quickly discovered to break software using their custom versions of Symbol#to_proc, in particular Rails.  This caused the feature to be pulled - and now it's back, after the behavior was changed to comply with the test suite. As it seems now, Symbol#to_proc seems to be here to stay in Ruby 1.8.7.

Here's a list of further API changes not mentioned previously:
  • Binding#eval
  • __method__  which returns the name of the current method as a Symbol
  • String#bytesize returns the size of the string in bytes
  • Object#instance_exec
The behavior of a few APIs was changed, which might cause some applications to break:
  • Date.parse was changed so that  '##.##.##' is now interpreted as 'YY.MM.DD'  instead of 'MM.DD.YY'.
  • String#to_i, String#hex and String#oct changed the behavior for the underscore '_' character in number strings, eg '1__0'.to_i in Ruby 1.8.6 was turned into '10', but in Ruby 1.8.7 it is turned into '1'. See the release notes for a more complete overview.

Rate this Article

Adoption Stage
Style

Hello stranger!

You need to Register an InfoQ account or or login to post comments. But there's so much more behind being registered.

Get the most out of the InfoQ experience.

Tell us what you think

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread
Community comments

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread

Discuss

Login to InfoQ to interact with what matters most to you.


Recover your password...

Follow

Follow your favorite topics and editors

Quick overview of most important highlights in the industry and on the site.

Like

More signal, less noise

Build your own feed by choosing topics you want to read about and editors you want to hear from.

Notifications

Stay up-to-date

Set up your notifications and don't miss out on content that matters to you

BT