Scala continuation and exception handling

Question

Suppose, I would like to catch an exception, fix the problem caused the exception and return to the same execution point where the exception occurred to continue.

How ca

Answer 1

This function should do it (place the code that throws exceptions at foo arg):

def F[T](foo: => T, dealWithError: Exception => T): T =
  try foo
  catch{
    case ex: Exception => dealWithError(ex)}

I use these class + implicit conversion:

  class ORfoo[R](foo: () => R){
    def or(r: R): R =
      try foo() 
      catch{
        case ex: Exception => r
      }
    }

implicit def ORfooWrapper[R](f: => R) = new ORfoo(() => f)

It allows you python-like exception treatment, like "1a".toInt or 5