Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

(jptxs)Re: Perl is psychic?!

by jptxs (Curate)
on Mar 06, 2001 at 05:06 UTC ( #62400=note: print w/ replies, xml ) Need Help??


in reply to Perl is psychic?!

according to the Perl5 Pocket Ref, $& is the string matched by the last successful pattern match. Since your regex .* matches anything $& is set to that by the first line, which matches foo and that's what you print in your eval - it eval's $& and finds 'foo' there. I think... =)

"A man's maturity -- consists in having found again the seriousness one had as a child, at play." --Nietzsche


Comment on (jptxs)Re: Perl is psychic?!
Select or Download Code
Re: (jptxs)Re: Perl is psychic?!
by MrNobo1024 (Hermit) on Mar 06, 2001 at 05:07 UTC
    Yes, but Perl dosen't set $& if you don't use it, and it was impossible to know that it would be used...
      Whoever voted down the above node completely missed the point. MrNobo1024 is completely correct in saying that if Perl worked as documented as far back as, say, Camel 2 then it should not have had enough information to calculate $&.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://62400]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others cooling their heels in the Monastery: (8)
As of 2014-09-19 00:17 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    How do you remember the number of days in each month?











    Results (128 votes), past polls