Re: Re: Re: Best way check key availability

Nope. It won't. Observe:

use strict;
my %a;
if ($a{'foo'}) {}
print keys %a;
[download]

According to your claim, this should print "foo". Well, it doesn't ;-)

Liz

Comment on Re: Re: Re: Best way check key availability Download Code

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Re: Re: Re: Re: Best way check key availability by hardburn (Abbot) on Sep 11, 2003 at 21:00 UTC
I think our Anony Monk was thinking about multi-dimentinal hashes: `my %a = ( foo => { }, bar => { }, ); if($a{baz}{key}) { }` [download] In this case, 'baz' is created in the first dimention. Since we're dealing with a single-dimentional hash, our Anony Monk was incorrect. ---- I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident. -- Schemer Note: All code is untested, unless otherwise stated	[reply] [d/l]

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I think our Anony Monk was thinking about multi-dimentinal hashes:

my %a = (
   foo => { }, 
   bar => { }, 
);
if($a{baz}{key}) { }
[download]

In this case, 'baz' is created in the first dimention. Since we're dealing with a single-dimentional hash, our Anony Monk was incorrect.

----
I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

Note: All code is untested, unless otherwise stated