# \[ANN\] IronRuby 1.0 RC2 **URL:** \ **Category:** IronRuby\ **Created:** [February 11, 2010, 2:14am UTC](https://www.ruby-forum.com/t/ann-ironruby-1-0-rc2/183273 "2010-02-11T02:14:09Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\ **Post date:** [February 11, 2010, 2:14am UTC](https://www.ruby-forum.com/t/ann-ironruby-1-0-rc2/183273/1 "2010-02-11T02:14:09Z")
The IronRuby team is pleased to announce version 1.0 RC2! [http://ironruby.net/download](http://ironruby.net/download) Direct download link: [http://ironruby.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=36931#DownloadId=105584](http://ironruby.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=36931#DownloadId=105584) This release is also accompanied by a preview release compatible with .NET 4.0 RC: [http://ironruby.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=40175](http://ironruby.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=40175) As IronRuby approaches the final 1.0, these RCs will contain crucial bug fixes and enhancements that IronRuby requires to be a fast and compatible 1.0. Now that IronRuby is in the release-candidate stage, your feedback is even more important. Please use these new binaries as much as you can and report any issues you find here: [http://ironruby.codeplex.com/WorkItem/Create.aspx](http://ironruby.codeplex.com/WorkItem/Create.aspx). Note: The actual version of the assemblies is “0.9.4.0”; they will be updated to “1.0.0.0” when the last anticipated RC of IronRuby 1.0 is released. == Contributors casualjim, eoinomeara, ghouston, jimmysch, jredville, jwthornpson2, KAZUu, kralor, niclasnilsson, nikosd, rifraf, sborde, thbar, TomasMatousek, turp, vaderpi, vertiginous, xport Thank you all, and everyone else who contributed to previous releases! == Highlighted changes in RC2 - Fix how ir.exe -e treats arguments - “-S” command-line argument: load file from path (eg. ir -S irb) - Implements BEGIN and END blocks. - support open(“|shell\_command”) for autospec - reduces the number of methods jitted during startup time of irb from 481 to 80, which translates to 34% time reduction. - enable debugging IronRuby when running in Silverlight - Fixes issues reported by mcs. - Adaptive loop compilation - super with implicit arguments in eval - Sets RUBY\_PLATFORM according to Environment.OSVersion.Platform For more detailed list of changes and bugfixes please see the CHANGELOG: [http://rubyforge.org/frs/shownotes.php?release\_id=42661](http://rubyforge.org/frs/shownotes.php?release_id=42661) Enjoy! ~ Jimmy … and the IronRuby team