How to check for and trap a CAS error in a program?

[BruceH]

(12-01-2018 03:41 PM)Albert Chan Wrote:  

(12-01-2018 02:48 PM)BruceH Wrote:  separate #cas...#end bracketed function which calls part() with 1, 2, 3, .. etc until it fails and then return the max value

That look like the function len() ...

Thanks Albert - length() is indeed the function that I'm after. I had previously tried DIM but it doesn't work for all expressions. I'd also tried SIZE with no luck, but overlooked length.

And thanks also to Jacob for the warning - I had no idea I was going to open a can of worms. :-)