Find a type in REPL?

Question

For example:

scala> val b = new ArrayBuffer[Int]()
<console>:7: error: not found: type ArrayBuffer
       val b = new ArrayBuffer[Int]()
                   ^

Can I use REPL to find the full path of ArrayBuffer and import it?

Answer 1

you need to import scala.collection.mutable.ArrayBuffer, classes (and objects) from scala.collection.mutable are not imported by default.