Open Radar

 
Summary:
Hi, 
I'm filling this bug report for what may look like bugs in Swift language.
I'm not the original person that have found this issue but I came up with a workaround. 

To give you more context about these issues here are original thread posted to the devForums.
 https://devforums.apple.com/message/978757#978757

Steps to Reproduce:
Using Swift language define an optional variable, use operators like ++, -- etc...:
var aNum: Int? = 3
++aNum 

Expected Results:
The expected result should change the value of the variable according to the operator used, with the provided steps aNum should have an int value of 4

Actual Results:
// Generates a compile error: could not find an overload for '++' that accepts the supplied arguments

++ operator does not seem to accept optionals as arguments.


Version:
Xcode 6.0 6A215l

Notes:
I've redefined the ++ operator as a workaround

operator prefix ++ {  }
@prefix @assignment func ++ (inout value: Int?) -> Int {
  if var n : Int = value {
    value = ++n
    return value!
  }
  else {
    return 0 // discussion about returning 0 for an empty optional
  }
}


var aNum: Int? = 3
++aNum // 4
++aNum // 5

var aNum2: Int? // nil
++aNum2 //discussion : 0

var a = 1
++a // 2