A fresh EAP build for IntelliJ IDEA 2016.2 is out and, being a good EAP build that it is, has something new for you to try:
General
A new inspection that warns you when you instantiate new objects inside equals, hashCode, compareTo or Comparator.compare methods. This helps to avoid significant performance problems when, for example, objects of classes with such constructs are added to Set or Map, where these methods will be frequently invoked.
Coding assistance for Regex has been extended with better error reporting and added code completion for named group references.
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