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Re^2: T.I.T.S. leads to B.U.M.S.

by Ben Win Lue (Friar)
on Apr 28, 2006 at 09:35 UTC ( #546222=note: print w/replies, xml ) Need Help??


in reply to Re: T.I.T.S. leads to B.U.M.S.
in thread T.I.T.S. Or, Try It To See.

Actually, I think the chances of B.U.M.S are much higher, if you did not have at least one T.I.T.S phase in your career.

Ok, the T.I.T.S approach should not be used in wrting software for the control of atomic power plants. But if you have a secluded sandbox, just get in touch with T.I.T.S!

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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.
[hippo]: Thanks for your input which has soothed my sanity (a little)

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