Which Scala type may throw an exception or a successfully computed value, and is commonly used to trap and propagate errors?

What is the data type of y after this code is executed? val y = (math floor 3.1415 * 2)

When using pattern matching, which character matches on any object?

You have created an array using val. Can you change the value of any element of the array—and why or why not?

What do you call objects with immutable state?

You have written a Scala script. How would you access command-line arguments in the script?

True or False? Like pre 1.5 Java, Scala suffers from lack of genericity.

Does Scala support the return keyword?

True or False? Multiple classes can be imported from the same package by enclosing them in curly braces {}.

Scala is:

What would be the result of: Option[String]("hi") match { case None=> "hello!" }