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Re^2: List::MoreUtils before, after and ... between?

by Boldra (Deacon)
on Feb 22, 2012 at 09:31 UTC ( #955483=note: print w/replies, xml ) Need Help??

in reply to Re: List::MoreUtils before, after and ... between?
in thread List::MoreUtils before, after and ... between?

I think you overlooked the first element of my sample array: 'eval'. It's worse than that, I can get an non-DBIC element in the middle of the DBIC elements.
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Re^3: List::MoreUtils before, after and ... between?
by RichardK (Parson) on Feb 22, 2012 at 11:25 UTC

    Well, obviously you can change the regex to match whatever you need.

    You didn't mention that about the DBICs, that's a more difficult and messy problem.

    It's probably going to be much more successful to look for what you do want, rather than what you don't, so I'd design a regex to do just that ;)

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[Corion]: Hmm - no, that outputs 1 for me on 5.14 - perl -wle "my $x = qq(\x{200b}); warn $x; warn length $x"
[hippo]: Smart - I'll give that a go. Thanks.
[hippo]: Ah
[Corion]: But maybe there is some other Unicode string that will be true but have a zero width
[hippo]: For explanation, I've seen this construct in someone else's code (no names, no pack drill) and couldn't think of a situation to trigger it.
[Corion]: You'll have to look somewhere esoteric for that. Maybe some tied variable or special dualvar can also trigger that. But it's certainly not a common occurrence
[Corion]: And on 5.20, the following also outputs no find:perl -wle 'for my $x ("\x{2000}".."\ x{1fffff}") { if( $x && ! length $x ) { warn qq(<$x>); warn length $x; die } }'
[Corion]: (this time on Unix)
[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.

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