Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical

Re^2: tie() weirdness

by blazar (Canon)
on Nov 21, 2005 at 15:03 UTC ( #510449=note: print w/replies, xml ) Need Help??

in reply to Re: tie() weirdness
in thread tie() weirdness

It may well be, since

print $s . $s . $s; # still produces the "error", print '' . $s . $s . $s; # makes it go away, # But! print join '', $s, $s, $s; # is fine,

The latter should still be essentially a concatenation in which the first element of the list is the tied variable. So what we're observing should result from an interaction between the tie mechanism and the concatenation operator.

BTW: it is well known that when a bare variable is passed as the first argument of a join, it is re-evaluated every time it's needed, and

print join $s, ('') x 4;

gives me (with the code of Re^2: tie() weirdness)

FETCH called! FETCH called! FETCH called! FETCH called! 123

which is unexpected too, but can be understood in terms of an extra-evaluation.

Log In?

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://510449]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others cooling their heels in the Monastery: (3)
As of 2022-12-08 03:48 GMT
Find Nodes?
    Voting Booth?

    No recent polls found