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Re: fixing smartmatch just hard enough (and when, too)

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From:

Damian Conway

Date:

August 23, 2012 01:07

Subject:

Re: fixing smartmatch just hard enough (and when, too)

Message ID:

CAATtAp4q2kNhpG2_a56KpYsvKLu5_ybdcRh6C+sZ_bpwgu-C=Q@mail.gmail.com

Johan Vromans asked:

>>     $Zero ~~ *GLOB    # unmatchable (invalid type) -----> undef
>>     $Zero ~~ \%HASH   # unmatchable (invalid type) -----> undef
>>     $Zero ~~ \@ARRAY  # unmatchable (invalid type) -----> undef
>
> Syntax error?

Possibly. Ideally, even.
But I don't insist on it (mainly because I'm not volunteering to
implement it ;-)

In any case, the following are still exactly the same problem and they
certainly
can't be resolved by the parser (or at compile-time):

    $Zero ~~ $GLOB_ref   # unmatchable (invalid type) -----> undef
    $Zero ~~ $HASH_ref   # unmatchable (invalid type) -----> undef
    $Zero ~~ $ARRAY_ref  # unmatchable (invalid type) -----> undef


Damian

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fixing smartmatch just hard enough (and when, too) by Ricardo Signes

Re: fixing smartmatch just hard enough (and when, too) by Damian Conway

Re: fixing smartmatch just hard enough (and when, too) by Johan Vromans

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