Does this already work [...] ?

Taking a peek at the source, apparently not, so you'd need to augment has with your own functionality, either be redefining it directly or via a subclass.

[...] and I'm doing something wrong to achieve my goal ?

Trying to pass a bare regex isn't going to work, as you'll end up passing it's return value against (in your example anyway) whatever $_ is before you even get to the sub.

Instead, you should use qr (my personal preference) or pass the string you want to use (ie, the regex minus the enclosing //'s) so that the regex gets evaluated when you really want it to: inside the function/method...

foo( qr/ba[rz]|quux/ );
foo(   'ba[rz]|quux' );

sub foo {
    my $regex = shift;

      # //'s not necessary if $regex 
      # was built with qr.
    return grep /$regex/ => @foo;
}

[download]
[...] How to alternatively implement that?

Depending on your needs, you might be able to use Quantum::Superpositions' any function...

any(@set) =~ /c\((.+)\)/;

... although I note I couldn't get it working with Q::S's all, so be sure to test for yourself.

    --k.


In reply to Re: Set::Scalar - Regexp as method parameter? by Kanji
in thread Set::Scalar - Regexp as method parameter? by PetaMem

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