What are the good Scala IDEs at the start of 2010?

Question

I know this is an exact duplicate, but a year has gone by and Scala seems to be a fast moving thing, so I figure it might be acceptable to ask again:

What is the bes

Answer 1

I tried both Eclipse, NetBeans and IntelliJ IDEA,

• Eclipse is the worst in my opinion. It is slow, sometimes messes up the syntax highlighting, almost always messes up the autocompletion and the whole IDE gets unresponsive from time to time. I would not recommend it for any kind of use except for self torturing.
• NetBeans works better than the Eclipse plugin. Better highlighting, much better autocompletion but it has been reporting errors on a fairly complex syntax all over the source. But when i hit run, the code compiles just well. Could not understand why. Another issue is that autocomplete can not suggest private members of classes when you are writing inside the body of that class. Poor!
• IntelliJ IDEA works just fine. I recommend that if you are seriously leaning against Scala development.

I hope that the Eclipse plugin will be more mature in time but given that it had plenty of time to become mature, I'm not a big fan of the idea. Scala has a great potential, being a well thought, programmer friendly language and running on JVM (which means great performance and high availability) but the poor IDE support is the worst thing for such language. Writing PHP on a simple text editor is acceptable but Scala, with such complex syntax and requirement to use the bloated Java libraries, there is a need of assistance. Maybe the current Scala community with functinal and Java background can not understand this but you can not expect newcomers to easily adopt to such a language instantly.

Anyway, go for IntelliJ IDEA...