Feedback: comparing content of two fields

[Michael Kann]

One more gem from Jacqueline.

--- On Fri, 4/29/11, J. Landman Gay <jacque at hyperactivesw.com> wrote:

From: J. Landman Gay <jacque at hyperactivesw.com>
Subject: Re: Feedback: comparing content of two fields
To: "How to use LiveCode" <use-livecode at lists.runrev.com>
Date: Friday, April 29, 2011, 2:45 AM

On 4/28/11 10:04 PM, Ronald Zellner wrote:

> Had to remove the color change as you can't set that attribute- as Michael predicted.

Actually you can. Another thing that slows down a script is using a counter variable in a repeat loop. Sometimes you have to, but if possible use the "repeat for each" structure, which is much faster.

I didn't actually test this so you may need to adjust it, but this handler only hits the field to twice and avoids a counter. Using htmlText allows you to color the lines without accessing the field repeatedly. It should be fast enough that you don't need to have any visual progress indicators; using "repeat for each" can typically process thousands of lines in a few milliseconds.

on mouseUp
   put fld "All" into allEntries
   put fld "Rural" into ruralEntries
   set the itemDelimiter to tab
   repeat for each line tLine in allEntries
      put tLine into tCurLine
      if cr & (item 1 of tCurLine) & tab is in cr & ruralEntries then
         put "Rural" into item 4 of tCurLine
         put "<p><font color=#FF0000>" &  tCurLine & "</font></p>" after tNewList
      else
         put "-" into item 4 of tCurLine
         put "<p>" & tCurLine & "</p>" after tNewList
      end if
   end repeat
   set the htmlText of fld "All" to tNewList
end mouseUp
-- Jacqueline Landman Gay         |     jacque at hyperactivesw.com
HyperActive Software           |     http://www.hyperactivesw.com

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