Neat, but not the most illuminating introductory demo. Took me a few minutes to figure out the UI is filling in the blanks at runtime, and I still don't see how/where it assigns an index to "members", or how it reasons about "members" at all.
Also confusing is declaring sum=0 instead of sum=?, since the program doesn't know what "sum" is until runtime. If I change the declaration to sum=10, does that change the runtime count?
Also confusing is declaring sum=0 instead of sum=?, since the program doesn't know what "sum" is until runtime. If I change the declaration to sum=10, does that change the runtime count?