Headius

Hello, friends! Long time no blog! I'm still here hacking away on JRuby for the benefit of Rubyists everywhere, usually slogging thro...

Hello friends! It has been too long! Today, after many years, I've got something I wanted to blog rather than tweet out in code snipp...

I'm thrilled to announce that we'll have another edition of JRubyConf.eu  this year! Last year's event was a great success. ...

I prefer to write happy posts...I really do. But tonight I'm completely defeated by the JDK's implementation of subprocess launchi...

I shouldn't be up this late, but I've been doing lots of thinking and exploring tonight. In studying various VMs over the past ...

With every JRuby release, there's always at least a handful of optimizations. They range from tiny improvements in the compiler to perf...

What does the following code do? If you answered "it upcases two strings and adds them together, returning the result" you mi...