Hi Dave, thanks for your reply. Yes, this would work (of course), but if the scalar was just 'declared' but no value assigned using our $foo; this doesn't work. It would show up in the symbol table, but it wouldn't be 'defined'. Perhaps I shouldn't have used the word 'defined' in my original question. I think I should rather have sayed 'declared'.
Any other ideas?
Thanks&Regards,
---------------------------------------------------------------------------------------
Gerhard Petrowitsch Tel.: +49 8151 270 126
Philips Semiconductors Fax: +49 8151 270 200
Petersbrunnerstr. 17 Home Office: +49 821 9069 741
82319 Starnberg, Germany SERI: [EMAIL PROTECTED]
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Be like the ant. When the ant gets a mixture of sand and sugar,
it selects only sugar; it neglects sand. See only good in others.
Pay no attention to the bad. (Sathya Sai Baba)
--------------------------------------------------------------------------------------------
To: Gerhard
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cc: [EMAIL
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Subject: Re:
Distinguish SCALAR from ARRAY, CODE, HASH in the symbol table of a typeglob
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23.10.2003 18:52
if (defined($foo)) { dosomething }?
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Subject: Distinguish SCALAR from ARRAY, CODE, HASH in the
symbol table of a typeglob
10/23/2003 01:14 AM
Hi all,
I've got a very tricky question:
If in the main name space I define an array @foo or a hash %foo or a
subroutine &foo I can test for it's existence by checking, if *main::foo{ARRAY},
*main::foo{HASH} or *main::foo{CODE} is defined. Unfortunately, for each of
these three also *main::foo{SCALAR} is defined. Therefore, I cannot determine
if a scalar $foo is also defined or not, when one of @foo, %foo or &foo is defined.
Is there any way to find this out?
(I want to do this in a program where I 'eval' user code into a namespace and I
would like to report name clashes with code of other users.)
Thanks & Regards
Gerhard
---------------------------------------------------------------------------------------
Gerhard Petrowitsch Tel.: +49 8151 270 126
Philips Semiconductors Fax: +49 8151 270 200
Petersbrunnerstr. 17 Home Office: +49 821 9069 741
82319 Starnberg, Germany SERI: [EMAIL PROTECTED]
---------------------------------------------------------------------------------------
Be like the ant. When the ant gets a mixture of sand and sugar,
it selects only sugar; it neglects sand. See only good in others.
Pay no attention to the bad. (Sathya Sai Baba)
--------------------------------------------------------------------------------------------
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