Deleting 1 line from a long list
xbury.cs at clearstream.com
xbury.cs at clearstream.com
Tue Oct 21 05:20:37 EDT 2003
First you should use a reverse loop to avoid the error of deleting
repeat with x = totallines down to 1
if pString is not in thislist then exit repeat
You can shorten it with this statement too...
put the number of lines in char 1 to offset(pstring,plist) into totallines
Using repeat with x = 1 to totallines will cause errors:
The totallines will not be exact after 1 deletion and you will repeat out
The next fastest trick is to use lineoffset or offset to find those
occurences. Repeat until the string
is no longer found.
By far the fastest should be this though:
If you can predict what the line will be you can also use a replace (
thisstring & CR) with "" in mylist.
The other choice is to use the regular expression if your guess is not
exact but grepable...
TNS NT LAN Server
Igor Couto <igor at pixelmedia.com.au>
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Subject: Deleting 1 line from a long list
I was wondering if the way that I'm going about a certain task is
actually the easiest/fastest way. The task is: I have a list
(return-delimited) of several hundred words. I need to delete ONE
specific word from the list.
Right now, I'm using a repeat loop, iterating through the list until I
find the string, then deleting it:
# PRE: pLIst should be a return-delimited list of strings. pString
should be the text of one of the items in pList.
# POST: pList is returned, minus the line that contains/is pString.
function fDeleteLine pList,pString
if pList is empty then return empty
if pString is empty then return pList
repeat with x = 1 to number of lines in pList
if line x of pList is pString then
delete line x of pList
I know that the "repeat with x" structure is supposed to be slower than
other forms of repeat, and I also seem to remember some experienced
users in this list recommending using arrays in some way to speed up
search and replace functions in lists.
So: is there a faster way to do this?
Many thanks for any hints!
Igor de Oliveira Couto
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