Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid
 
PerlMonks  

Re: Find all strings containing "a" characters, that are not followed by "b" characters.

by bart (Canon)
on Dec 12, 2012 at 17:59 UTC ( [id://1008540]=note: print w/replies, xml ) Need Help??


in reply to Find all strings containing "a" characters, that are not followed by "b" characters.

Try 
/a(?!b)/

[download]
with negative lookahead.

And yes, your regexp looks rather OK, except I would drop a few \b anchors: 

/a\b|a[^b]/

[download]
or combined: 
/a(\b|[^b])/

[download]
Will that do?
  • Comment on Re: Find all strings containing "a" characters, that are not followed by "b" characters.
  • Select or Download Code

Replies are listed 'Best First'.
Re^2: Find all strings containing "a" characters, that are not followed by "b" characters.
by Anonymous Monk on Dec 12, 2012 at 18:04 UTC
    immediately after, and anywhere after, not the same :)
[reply]

In Section Seekers of Perl Wisdom

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?

www.com | www.net | www.org
Node Status?
node history
Node Type: note [id://1008540]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? • Last hour • Other CB clients
Other Users?
Others surveying the Monastery: (2)
As of 2024-04-24 23:04 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found