Checking to see if a variable is defined?

[gunship256]

I'm trying to use boundp to see if a variable is defined, but Transcendence gives me an error if I try to:

unknown function [boundp]

More specifically, I created a test device to see what would happen if I tried to use boundp. Here's the relevant part of the code. Is there a better way for me to go about this?

Code: Select all

		 <Invoke>
			
			(block Nil			
				(if (boundp 'auto-mode-alist)
					(objSendMessage gSource Nil "Variable is defined")
					(objSendMessage gSource Nil "Variable is NOT defined")
					)
				)

			</Invoke>

Here's where I got the idea to use the function:
http://ergoemacs.org/emacs/elisp_check_defined.html

[AssumedPseudonym]

 The problem is that Transcendence uses a customized version of LISP, not the “real” version, so a lot of things that would work in “real” LISP won’t work in Transcendence. You can check what functions are available to use and usually how to use them here.
 As for checking whether a variable is defined:

Code: Select all

<Invoke>
  (block Nil         
    (if (isError variableName)
      (objSendMessage gSource Nil "Variable is NOT defined")
      (objSendMessage gSource Nil "Variable is defined")
    )
  )
</Invoke>

 That should do the trick.

[gunship256]

That worked perfectly. Thank you!

[Arkheias]

Alternatively, if you need something more specific:

Code: Select all

<Invoke>
  (block Nil         
    (if (isInt variableName)
      (objSendMessage gSource Nil "Variable is an integer")
      (objSendMessage gSource Nil "Variable is NOT an integer")
    )
  )
</Invoke>