Not shy at all...
alex at tweedly.net
Sun Jun 6 13:42:05 CDT 2004
At 09:55 06/06/2004 -0700, Bob Nelson wrote:
>...so let's dive in with both feet.
I'll do the same, and probably land myself right in trouble :)
I've only just started investigating Revolution, with no previous
experience with Hypercard or AnythingCard - so these are comments that need
to be treated accordingly.
>So I've got a little script that does a moderately simple thing: Grab a web
>page, bring it back, strip useless data out of it (right now, I've just got
>it stripping out the extra returns and leading spaces per line) and the next
>step will be to kill the HTML on the page so I can mine the data...
Stripping HTML can become tricky - I'd look around and see if there is a
user-contributed script / library to deal with the heavy lifting ...
>My layout and code are fairly simple:
>Two fields and two buttons so I can work through the example - the first
>field is the 'holder' of the remote URL which has been retrieved
>(Imported_Raw) and the second field will be the restructured output when I'm
>Here's the code, for those who want to dive deeper...
I'll leave specific comments to those who know better, but doing all the
manipulation in the same field looks inefficient - put the processed
sections into a separate (results) field (and don't display it until done).
>Here's what I noticed about execution:
>5. Looking through all the examples I can find, as well as documentation, I
>noted that there aren't many examples related to text manipulation - and
>importing/exporting text, etc., in/out of your stack. I'm sure I missed
>something on this front, as I'm sure people would be doing this all the
>time... Can anyone point me in a direction?
From an outsider's point of view, the lack of a regular expression package
in Revolution looks like it will make this (the real problem, not the
simple first step) a harder problem than it need have been. One of the
things that attracted me to Revolution was a statement along the lines
of "text processing like you've never seen" - but I haven't found anything
to justify that claim yet. The built-in tokenizing is neat, but hardly
revolutionary, and the apparent lack of RE looks like a big missing
feature. (Please tell me it's in there and I just missed it in the docs ....)
Although Revolution looks great for some things, I'd have said that a
text-processing problem with minimal user interaction doesn't look like the
sweet-spot for Revolution.
I did a simple Python attempt at your simple problem - prompt for URL, read
URL in, strip blank lines and leading spaces. Didn't bother with a
progress bar - the processing takes less than a second anyway (for 210K
lines -> 145K lines).
>Finally, I'm impressed with the professional layout of the product - this
>could well be the perfect 'update' (I'm sure they don't like to hear that at
>Rev!) to HyperCard. I'm looking forward to a book, like The Complete
>HyperCard Handbook, that lays out the functionality of Revolution as an
>awesome reference book.
-- Alex Tweedly.
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