I'm a beginner of Kotlin, there are many omitted code with Kotlin. It make me crash when I read some sample code.

Such as `var map=HashMap()`

I can't judge what HashMap() is function or class. I have to judge it by Hint of Android Studio. Do you have a simple way?

If I use java, it will be different code style.

**Function:** Map map=myFunction()

**Class:** Class myClass=new Class()