[RESOLVED] String IndexOf and Remove VS Regex

[Lasering]

Hi!

I have a string with 60000+ characters. I look for informations inside the string in a sequentially order. Every time I found a information I delete whatever is behind that information. In other words I reduce the size of the string every time I find something, and I do this using IndexOf and Remove, much like this:

Str = Str.Remove(0, Str.IndexOf("MyInfo"))

This can be quite heavy on the processor. So my question is it faster to look the informations using Regex or it would be about the same?

[gep13]

Hey,

In terms of string manipulation, Regular Expressions are about as optimised as you can get, so I would suggest that you will see a performance improvement in using Regex.

Give it a try and see.

You could use the StopWatch Class to get some timings to compare both methods.

Gary

[Lasering]

Just changed everything to Regex.

[gep13]

Hey,

Good man!! I like Regex

Gary

[Lasering]

Now, so do I! Regex rocks!!

[gep13]

One thing that I will point out is a very nice little application for creating Regular Expressions, it's called RegExBuddy, you can find a link to it in my signature. It isn't free, but there is a trial version to see if you like it.

Also, if you haven't found it yet, have a look at RegExLib, also in my signature.

Gary