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Postings from June 2013
On 10.06.2013 13:33, Dave Mitchell wrote:
> On Sun, Jun 09, 2013 at 06:51:23PM -0500, David Nicol wrote:
>> one of the perl6 RFCs suggested allowing a regex as a hash index
>>
>> @hash{/REGEX/}
>>
>> to mean
>>
>> @hash{ grep /REGEX/, keys %hash }
>
> but that syntax already has a meaning:
>
> %h = qw(aa 1 bb 2 cc 3);
> $_ = 'aa bb';
> print @h{/(\w+)/}; # prints 1
> print @h{/(\w+)/g}; # prints 12
>
Right, but @hash{qr/REGEX/} could work. Currently it stringifies the
regex object and uses that as a hash key, but that's not very useful IMHO.
Would $hash{qr/REGEX/} mean $hash{join $;, grep /REGEX/, keys %hash}?
--
Lukas Mai <plokinom@gmail.com>
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