Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer

Re: Re: Re: Make things a *little* easier

by mdillon (Priest)
on Sep 12, 2002 at 15:37 UTC ( #197250=note: print w/replies, xml ) Need Help??

in reply to Re: Re: Make things a *little* easier
in thread a farewell to chop

Yes. Using undef as the third argument does have that effect. I suspect Perl 6 will improve on this somewhat by being able to do: substr $str, -1, replace => ''; This may not seem like much of an improvement, but it gets rid of the undef, which could possibly be mysterious to the uninitiated (as could lvalue substr).

Update: yikes! Using undef doesn't actually work like this (i.e. as the third arg in a Perl-5 substr). I had assumed it did, but it actually acts the same as using 0 as the third arg (at least with 5.8.0). Anyways, the lvalue behavior is stable and documented since 5.6 (possibly earlier); if undef works like this in any Perl version, I haven't seen it documented. Sorry for the foolish mistake (and for the unfounded assumption).

Log In?

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://197250]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others avoiding work at the Monastery: (4)
As of 2022-11-29 04:58 GMT
Find Nodes?
    Voting Booth?