Scala Fun Question 7

What are the output results of the following program?

Package pz007object pz007 extends app{  import collection.mutable.buffer   import collection. seq  val funcs1 = buffer[()  => int] ()   //create empty   arraybuffer  val funcs2 = buffer[()  => int] ()      {    val values = seq (100, 110, 120)   //  create a list buffer    var j = 0     for  (i <- 0 until values.length)  {       funcs1 +=  (()  => values (i)       funcs2 +=  ()  => values (j))       j += 1    }   }    funcs1 foreach {f1 => println (F1 ())}  fUncs2 foreach {f2 => println (F2 ())}} 

Explain:

The first thing to do is immediately how the for expression is expanded into a foreach function. The i in the for expression is defined as a number of Val, as arguments to the parameters of the foreach function. So the function in funcs1 get I actually is 0, 1, 2

Conversely, the function in funcs2 gets the J always variable J, and the last value of the variable J is 3.

Scala Fun Question 7