Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

Re^2: Efficient bit counting with a twist.

by BrowserUk (Pope)
on Jan 27, 2013 at 08:33 UTC ( #1015567=note: print w/ replies, xml ) Need Help??


in reply to Re: Efficient bit counting with a twist.
in thread Efficient bit counting with a twist.

Why pack 'V'?

substr( $v, $p / 8, 1 ) is a byte, why mask with 4 bytes?


With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
div class=Why


Comment on Re^2: Efficient bit counting with a twist.
Download Code
Re^3: Efficient bit counting with a twist.
by quester (Vicar) on Jan 27, 2013 at 09:02 UTC
    Oh. That. It's just force of habit, I adapted this bit of code from the way I code bitmasks for IPv4 subnets. It would make more sense to code it as pack 'C',... rather than pack 'V', although it works either way.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1015567]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others avoiding work at the Monastery: (6)
As of 2014-09-03 03:22 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My favorite cookbook is:










    Results (35 votes), past polls