Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change
 
PerlMonks  

Re: Reading Reg Exp

by Ratazong (Monsignor)
on Aug 11, 2010 at 06:34 UTC ( [id://854222] : note . print w/replies, xml ) Need Help??


in reply to Reading Reg Exp

There are many resources on this in the tutorials-section.

Another resource I find helpful is this online analyzer. It gives you at least a hint where to search for - e.g. in your second example it shows that the ?= is a ZeroWidthPositiveLookahead. Google it to gain deeper knowledge ;-)

HTH, Rata