Regular Expression questions

[leazfe]

I have three doubt:

1. In the next expresion: (?<desc>\w+) , how can i save in "desc" all the word fitting the expresion, for example with the next source: "Hallo ich bin ich" it should keep the hole string but it only has "Hallo".

2. How can i do an if statment with regular expresion. I have a string that could have a number or not, in the event of no number exist the string "" is asigned and i get always a cast exception, i have tried something like this:
(?(\d2)(?<status>\d2)|0)

3. How can i count the number of time that has appeared an expresion ?


Thanks,
Álvaro

[alexandros]

Originally posted by leazfe
I have three doubt:

1. In the next expresion: (?<desc>\w+) , how can i save in "desc" all the word fitting the expresion, for example with the next source: "Hallo ich bin ich" it should keep the hole string but it only has "Hallo".

Simply do not use (? .... ) because using (? will not return the match.

use (<desc>\w+) instead.

You find it then either in the match on in the submatches collection.

2. How can i do an if st
atment with regular expresion. I have a string that could have a number or not, in the event of no number exist the string "" is asigned and i get always a cast exception, i have tried something like this:
(?(\d2)(?<status>\d2)|0)


3. How can i count the number of time that has appeared an expresion ?

dim matchcol as matchcollection
set matchcol=regexp.execute(mytext)
number of matches = matchcol.count i think

Thanks,
Álvaro