Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask

Re^2: Using Look-ahead and Look-behind

by Roy Johnson (Monsignor)
on Nov 12, 2007 at 17:54 UTC ( #650323=note: print w/replies, xml ) Need Help??

in reply to Re: Using Look-ahead and Look-behind
in thread Using Look-ahead and Look-behind

Generally, the decision about using ?: is not about whether it's necessary, but that capturing whatever you're grouping isn't necessary. The ?: modifier makes parentheses not capture, which is somewhat more efficient and might make the task of counting left parentheses less onerous.

By the way, it's not a lookaround feature.

Caution: Contents may have been coded under pressure.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://650323]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others having an uproarious good time at the Monastery: (4)
As of 2016-10-21 01:15 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (284 votes). Check out past polls.