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

Re^4: Boolean counter?

by Anonymous Monk
on Dec 07, 2009 at 16:15 UTC ( #811533=note: print w/replies, xml ) Need Help??

in reply to Re^3: Boolean counter?
in thread Boolean counter?

$i appears only once, the behaviour is defined
$ perl -MO=Deparse,-p -le"print - --$i" BEGIN { $/ = "\n"; $\ = "\n"; } print((-(--$i))); -e syntax OK
You were thinking of
print(-( ++$i - --$i ))

Replies are listed 'Best First'.
Re^5: Boolean counter?
by ikegami (Pope) on Dec 07, 2009 at 17:01 UTC

    While the operand evaluation order for the ops you've used in your example isn't defined, it doesn't matter (unless there's an overflow) for that example. It's just a clarity issue.

    $i appears only once, the behaviour is defined

    Except it ($Counter) appeared twice.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://811533]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (3)
As of 2016-10-23 04:23 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (300 votes). Check out past polls.