Swift 2.1 OSx shell commands using NSTask work when run from xcode, but not when exported

Question

I wrote a simple OSx (10.11) application to execute shell commands when a button is pressed. It works when I run it from xcode, but when I export the application via \"archive\"

Answer 1

Your issue is the result of two things happening together:

• you return default values

• you don't specify alternative branches for the control flow

What happens is that it hides potential failures, and leads to code that is very hard to debug, as you experienced.

A possible solution with your existing code is to cover all possible ways, meaning providing else branches to your if var string = String.fromCString(UnsafePointer(errdata.bytes)) conditions, where you will handle errors.