Time for action – creating a data save stack

We're going to be making a copy of a stack, but only if a copy of the stack doesn't already exist. LiveCode has a nice "if there is a…" function, which was made for times like this!

Firstly we will create the stacks we'll need.

1. Start a new Mainstack, with a name of LaunchStack. Save it somewhere other than your computer's Documents folder.

2. Start another new Mainstack, with a name of AppStack. Save it next to the first stack.

3. Place something onto each stack's card, so you can easily recognize when you're in that stack. For example, drag a button onto the card of the LaunchStack stack and name it in a way that makes it very easy to tell where you are. Do the same for the AppStack stack.

4. Put this openStack handler into the stack script of LaunchStack:

   on openStack
      set the defaultFolder to specialFolderPath("Documents")
      if there is not a file "AppStack.livecode" then
         put the filename of this stack into masterfile
         set the itemdelimiter...