Language alone does not mean tons of productivity gain. Building software requires more than just syntatic sugar.
C# has all these features yet I have never seen killer tools that changed the .net landscape like Rails did with Ruby. While I would not call those language features smoke and mirror, I argue that they are merely nice to have and not ground nor thought provoking.
At the end of the day, Java ecosystem still move forward way faster than .net. Spring, cloudera, datastax, alfresco, liferay, ehcache, jboss, tomcat, Embedded server like Jetty, and other great, free, mature, serious, and open source tools are available at our disposal vs taking to sales rep to buy licenses, which are a common activity in .net world.
C# has all these features yet I have never seen killer tools that changed the .net landscape like Rails did with Ruby. While I would not call those language features smoke and mirror, I argue that they are merely nice to have and not ground nor thought provoking.
At the end of the day, Java ecosystem still move forward way faster than .net. Spring, cloudera, datastax, alfresco, liferay, ehcache, jboss, tomcat, Embedded server like Jetty, and other great, free, mature, serious, and open source tools are available at our disposal vs taking to sales rep to buy licenses, which are a common activity in .net world.