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RE: How do I correctly abort a response?

by BBQ (Deacon)
on Apr 18, 2000 at 05:55 UTC ( #7908=note: print w/replies, xml ) Need Help??


in reply to How do I correctly abort a response?

yup! not only did I notice that, I did it myself (in my own question, nontheless) as chromy (*chuckle*) mentioned, it only seems to affect Seekers of Perl Wisdom while the rest of the site goes smooth.

It is kinda nice to be able to 'post at once' though... (lets just call it a feature and get it over with!)
  • Comment on RE: How do I correctly abort a response?

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[Corion]: Aaah - you should be able to do this with overload, but I would hit somebody really hard if they constructed objects that are true but the empty string, and you not knowing about the domain knowledge where this makes sense
[Eily]: you could tie a variable into not having the same value each time, if you like to make people who try to debug your code facepalm
[Corion]: perl -wle 'package o; use overload q("") => sub {warn "str"; ""}, bool => sub{warn "bool"; 1}; package main; my $o={}; bless $o => o; print "Yay" if ($o && !length($o))'
[Corion]: But people writing such code should document the objects they construct and why it makes sense for an object to be invisible as string while being true in a boolean context
[hippo]: That's equal parts clever and horrendous.
[Eily]: the overload version wouldn't return true with "$x" && !length $x though, I guess
[hippo]: The more I look at this code, the more $x is a plain old scalar and the more this condition will never be true. I'm calling it a bug at this point.
[hippo]: Thanks for your input which has soothed my sanity (a little)
[Corion]: Eily: Sure - if you force both things into stringy things, then you break that magic. But that would also mean that you changed the expression, as now $x = 0.00 will be true instead of false as it were before

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