Re: can I do this better?
Re: can I do this better?
- Subject: Re: can I do this better?
- From: "Arthur J. Knapp" <email@hidden>
- Date: Fri, 14 Jun 2002 11:49:45 -0400
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Date: Wed, 12 Jun 2002 12:47:36 -0500
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Subject: can I do this better?
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From: garrett <email@hidden>
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I wrote this little routine to trim off any trailing or beginning spaces or
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returns. would any of u pros do it differently or better? if so, how and
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why?
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property removeChars : {return, space} --text to look for for trimming
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property searchDirection : {1, -1} --1 searches forward, -1 searches
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backwards
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on trimText(search_Text)
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repeat with i in searchDirection --first search forward then backward
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set search_Text_Character to character i of search_Text --the
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repeat until removeChars does not contain search_Text_Character
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if i = -1 then
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set search_Text to characters 1 through ((length of
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search_Text) - 1) of search_Text as string
A few things to point out here. First, the "characters... as string"
syntax tends to be a bit slow, since several coercions are occuring.
characters x thru y of theString --> creates a list
... as string --> back to string
The better statement is:
text x thru y of theString
-- or
text from character x to character y of theStirng
as in:
set search_Text to text 1 thru (search_Text's length - 1) of search_Text
Another thing I would do is to try to limit the number of times it is
nessesary to "munge" the string. It is better to simply use a variable
index to keep one's place in the string:
set i to str's length
repeat while (str's character i = trimChar)
set i to i - 1
end
set str to str's text 1 thru i
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