It would be closer to what I want if you "assumed" 1 semi -- see if that parses. If so, goto next. If not, then this is where that PPI module could be useful -- run the parse w & w/o the semi and see if it only can work the 2nd way -- if so, ask for another line.

Hm. My point in posting my solution to the problem is that it is extremely simple. And it works.

As the user, I know exactly when what I've typed is complete and should be evaluated. And that is true every time I use the interface.

There is -- IMO; definitely for my repl, but also from my understanding of your calculator -- simply no purpose or benefit from attempting to program in a heuristic to try and predict what the user -- sat right there at the keyboard entering the text your heuristic would be trying to analyse -- is thinking or wanting.

With all of the complexity that is PPI and all the effort that would be required to try and achieve guessing what the user wants; when the user can simply indicate it directly...pointless.

Of course, it's your time, your effort and your choice; but KISS is a fine principal to adopt.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I knew I was on the right track :)
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^5: howto parse (or determining end) of a line of perl by BrowserUk
in thread howto parse (or determining end) of a line of perl by perl-diddler

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