Re^2: Taking a subset of a hash

Sorry if I forgot to mention that $config was a reference.

Doesn't defined $config{ $_ } && $config{ $_ } have the same truth value as $config{ $_ }?

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Re^3: Taking a subset of a hash by BrowserUk (Patriarch) on Oct 30, 2010 at 13:59 UTC
Doesn't defined $config{ $_ } && $config{ $_ } have the same truth value as $config{ $_ }? Yes. I was attempting to capture your stated requirements: but omits them if their configured value is false, undefined, or nonexistent. and got it wrong. It should be: `exists $config{ $_ } && $config{ $_ }` [download] Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. RIP an inspiration; A true Folk's Guy	[reply] [d/l]

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Re^3: Taking a subset of a hash
by BrowserUk (Patriarch) on Oct 30, 2010 at 13:59 UTC

Doesn't defined $config{ $_ } && $config{ $_ } have the same truth value as $config{ $_ }?

Yes. I was attempting to capture your stated requirements:

but omits them if their configured value is false, undefined, or nonexistent.

and got it wrong. It should be:

exists $config{ $_ } && $config{ $_ }
[download]

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.