Ruby: code “updgrading” from 1.8.6 to 1.9.2

Question

i'm interested in updating code which is written in ruby v1.8.6 to 1.9.2.
Are there any useful links to read about (probably with some warnings and recommendations)?

Just to be clear, so, i'm not expecting any problems right now, but i would like to avoid them.

P.S. Links like this one are mostly not helpful.

Answer 1

A slideshow showing the differences: http://slideshow.rubyforge.org/ruby19.html#11
I migrated an app from ruby 1.8.7 to 1.9.3 a few days ago, and no problems happened.
Bu i advise you to test all of your code for little bugs.

Answer 2

Verify that all the gems you depend on are 1.9.2 compatible. isitruby19.com is a good resource to check this.

Other than that, the best strategy is to try migrating and do some testing. If your application has comprehensive unit test coverage, this shouldn't be too painful.