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Ruby: Jruby
built 275 days ago
In its current, official implementation, written in C, Ruby is a single-pass interpreted language. As of 2008, there are a number of alternative implementations of the Ruby language, including Rubinius, JRuby and IronRuby, each of which takes a different approach, with JRuby providing just-in-time compilation functionality.
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Some Ruby users are familiar with the ‘Win32API’ library that ships as part of the Ruby standard library. That library lets you interface with the Windows API by defining function pointers from specific DLL’s that you later call. With JRuby’s JNA interface you can now interface with Windows in a similar fashion.
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The fact that JRuby is a Ruby platform on the JVM means that in JRuby you have two kinds of objects - JRuby objects and Java objects. Although there are ways for the two to talk to each other and to convert there is a difference. There are times when you need to know whether you're dealing with a Java string or a JRuby string. With Groovy you don't have that boundary, there are just Java objects.
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