Tracer
I like the trace utility, and I especially like the ability to check up on
variables by using the '?' key.
However, my problem at the moment is that there is an error deep within a
large sequence. It's not a run-time error, but it produces an undesirable
result. I can't see that particular entry, because all that you can see of
the sequence is the first few members. I'd like to see extended support in
the trace facility, to specify an entry or a slice of a variable, or even do
multi-dimension databases.
A further change, if possible... would be to allow lines that reference
other lines - ie mysequence[row][col]. Ultimately, it would be nice if it
could support any function that doesn't change variables outside the scope
of the function. That might seem a bit strange... but consider this.
Inside tracer window:
if a variable is entered via the ? button, eg template[line]
an entry would appear below as "template[line]=<it's value>"
if a non-variable is entered via the ? button, it checks to see if it will
change any variables outside the function, and if not will allow it. It puts
the result in the window as "Result=<it's value>". Result would be a simple
placeholder, and could not be called by a successive ? entry.
Examples...
template[line - 1] * template[line]
would recognise that there aren't any function calls, and return that
amount, under the moniker Result=
template[length(template)]
would recognise the presence of a function call, and check the function
'length' for any commands that would change a variable. If there aren't any,
then it returns that amount, under the moniker Result=
If it fails it can just return an 'disallowed' message.
My $0.02
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\__| Mr Trick
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