Topic: How to cross out a string
I need to cross out strings except the last four letters. The string can have different lengths and have shorter than 4 letters.
For example if a = "123-456-7890' and b = 'xyz'
Then crossout(a) = "XXXXXXXX7890" and crossout(b) = "XXX"
I'm not very good with regular expressions - can someone help? Also, what's a good book or site where I can study about regular expressions so I don't have go ask every small question on the forum? For me regexps is such a black art.
Last edited by sthapit (2010-12-07 22:27:52)