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Re: /o is dead, long live qr//!

by Anonymous Monk
on Jun 26, 2003 at 12:01 UTC ( #269204=note: print w/replies, xml ) Need Help??

in reply to /o is dead, long live qr//!

What about this:
use constant foo => 'bar'; my $x = qr/ ${\&foo} /xo; "something" =~ $x;
I found this to be the only way I could achieve this effect. Is there a better way?

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Re: Re: /o is dead, long live qr//!
by diotalevi (Canon) on Jun 26, 2003 at 12:08 UTC

    Yes and? Your qr// expression interpolated and then fixed the constant into place. Normally I'd just eschew that as a particularly ugly form of a regex though. In fact, I'd likely have written that as this instead. I'd be using the constant like its intended (as in, not like a cleverly named function) and I still get something reasonable. Now other people like Perrin have been convincing me that constant isn't all that great anyway especially given the bareword quoting rules with the => fat comma and interpolation (like you noticed).

    use constant FOO => 'bar'; my $x = FOO; $x = qr/$x/; "somehting" =~ $x

    So actually, I wouldn't have written it at all like that. This is more likely. Though I wouldn't have gone out of my way to create a qr// object if I was only going to use it in one place anyway. That looks like something that'd be better written as merely "something" =~ $FOO.

    our $FOO = 'bar'; my $x = qr/$FOO/; "something" =~ $x;

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