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Find special characters in string (Performance)

Martin Lira
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Joined: May 26, 2004
Posts: 97
Hello Guys,
I need to create a method that determines if certain characters like

Which of this two ways is better in performance? Or is there any better way?

[ April 03, 2006: Message edited by: Martin Lira ]
Alan Moore
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Joined: May 06, 2004
Posts: 262
If no special characters are present, the first method will scan the whole string four times, while the second will only scan it once. Performance-wise, that's the only difference worth noticing, so you might as well go with the second method. But you're probably wasting your effort. Remember the three rules of optimization:

1. Don't do it.
2. Don't do it.
3. Before you do it, complete the app and profile it; the bottlenecks probably aren't where you expect them to be.
I agree. Here's the link:
subject: Find special characters in string (Performance)
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