[Groovy] What's New in Groovy 1.6

[Rafael_Afonso]

* [b]Greater compile-time and runtime performance improvements[/b]
* Multiple assignments
* Optional return in if/else and try/catch blocks
* Java 5 annotation definition
* [b]AST transformations[/b] and all the provided transformation annotations like @Singleton, @Lazy, @Immutable, @Delegate and friends
* The Grape module and dependency system and its @Grab transformation
* Various Swing builder improvements, thanks to the Swing / Griffon team, as well as several Swing console improvements
* The integration of [b]JMX builder[/b]
* Various [b]metaprogramming improvements[/b], like the EMC DSL, per-instance metaclasses even for POJOs, and runtime mixins
* [b]JSR-223[/b] scripting engine built-in
* Out-of-the-box [b]OSGi readiness[/b]

Mais detalhes em: http://www.infoq.com/articles/groovy-1-6

O que mais me chamou a atenção foram os Multiple assignments:

def firstname, lastname
(firstname, lastname) = "Guillaume Laforge".tokenize()
assert firstname == "Guillaume"
assert lastname == "Laforge"

Esse recurso já existe no Python, não?

[tnaires]

Em Python não sei, mas em Ruby tem.

[xymor]

O aumento de desempenho é muito bem vindo. Groovy 1.7 com asm 3 deve ser ainda mais rápido.