Sunday, February 15, 2015

Bit of Scala for the weekend

This weekend I was trying to help a friend solve Scala probelm, I haven't touched scala since school, I helped him bascily by asking him bunch of questions ... I didnt know it myself, but I ask the right questions ...

I kept asking basic questions till we both learn it ! here is my code snippet to remember it for myself.


scala> val medyaconst : (Int,Int) => () => (Int, Int) = {  (a,b) => () => (a,b) }
medyaconst: (Int, Int) => () => (Int, Int) =

 try it in scalla shell

scala> val med1= medyaconst(13,26)
med1: () => (Int, Int) =

scala> med1
res0: () => (Int, Int) =

scala> med1()
res1: (Int, Int) = (13,26)
now trying a stateless counter:

val counter : Int => () => Int = 
{  x => { var n:Int = x; () => { val retVal = n; n = n + 1; retVal } }  }
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