Like a total newbie I put the call to the interpreter in the view
function instead of the update function! I thought it was weird having
to specify the HTML twice, but I figured I was just doing it wrong. I
was, but not in the way I suspected.
In any event, I like how this make it clear that errors can't affect the
dictionary.
Just sqr for now, but it shows that it works.
I would like to return Results from add_def but it makes using foldl
slightly tricky, not a lot, just slightly, and my brainpower is low at
the mo'.
sforman