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

Re: Efficient walk/iterate along a string

by SimonClinch (Chaplain)
on Nov 23, 2010 at 10:46 UTC ( #873159=note: print w/ replies, xml ) Need Help??

in reply to Efficient walk/iterate along a string

It's probably faster to use the C-style for loop,

for ( my $i=0; $i <= $max; $i++ ) { }
On the other hand, you might even want to do this whole loop from within C itself. See ch 21.3. Extending Perl (Using C from Perl) of Programming Perl by Larry Wall, Tom Christiansen, and Jon Orwant (ISBN 059600027).

erm correction, I mean do the substring extraction from C not the processing you do with it. Although the perl loop will indeed consume less resources if C-style instead of forcing a huge list to be constructed.

One world, one people

Comment on Re: Efficient walk/iterate along a string
Download Code

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://873159]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others browsing the Monastery: (5)
As of 2015-03-29 12:55 GMT
Find Nodes?
    Voting Booth?

    When putting a smiley right before a closing parenthesis, do you:

    Results (630 votes), past polls