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Re: Now that the Winter Games are over, I can get back to

by Roy Johnson (Monsignor)
on Feb 27, 2006 at 17:48 UTC ( #533091=note: print w/replies, xml ) Need Help??


in reply to Now that the Winter Games are over, I can get back to

Watching the events we taped.

Caution: Contents may have been coded under pressure.
  • Comment on Re: Now that the Winter Games are over, I can get back to

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Re^2: Now that the Winter Games are over, I can get back to
by DrWhy (Chaplain) on Mar 02, 2006 at 00:50 UTC
    Hah! I still have one event (Ice Dancing Free Dance) to watch.

    --DrWhy

    "If God had meant for us to think for ourselves he would have given us brains. Oh, wait..."

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[hippo]: Understood. I'll have to go through the code and see if it's doing anything fancy with ties, dual-vars or non-scalars. In the end, it's probably a bug though.
[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.

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