appending attributed strings
appending attributed strings
- Subject: appending attributed strings
- From: Cryx <email@hidden>
- Date: Sun, 21 Apr 2002 19:05:26 -0500
It seems that appending attributed strings can be very slow. Here's my
situation:
1) If I append a large block of text (~100k) to a scroll view's text
container the operation takes a fraction of a second.
2) If I append each line (~3000) individually, the operation takes about
10 seconds.
3) If I appended each line to my own attributed string, then append that
resulting string to the container, the results are the same as #2.
The application needs to process the text in a line by line fashion,
possibly rewriting some lines, maybe adding or removing lines, so #1 is
not a viable approach. I suspect the slowness may be due in part to the
appends reallocating the string. Is there a way to provide an initial
size hint to a string?
Please don't think I'm being overly pedantic. :) The application in
question is an interactive client, and even for small input sets, the
latency can easily be detected on a DP800. :(
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