Scala嵌套表达式不接受参数

Question

Team,

New to scala and learning step by step. while learning nested scopes in expression blocks, wrote below lines of code

object ExpressionTest extends App {


  val area = {
    val PI = 3.14
    PI * 10
    {
      val PI= 100
      PI * 2
    }
  }

  println(area)
}

Getting below exception at runtime .

Error:(9, 5) Int(10) does not take parameters
I am using Intellji 

Answer 1

In Scala it is possible to specify a function parameter as a block. The compiler thinks that your inner block is a parameter to 10 from the previous line.

To help the compiler understand what you mean, you can add a ; at the end of the line:

 val area = {
    val PI = 3.14
    PI * 10;
    {
      val PI = 100
      PI * 2
    }
  }