Your message dated Mon, 21 Apr 2008 23:03:42 +0300 with message-id <[EMAIL PROTECTED]> and subject line Re: Bug#406101: constant.3perl.gz: add discoveries perhaps if clearer has caused the Debian Bug report #406101, regarding constant.3perl.gz: add discoveries perhaps if clearer to be marked as done.
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--- Begin Message ---Package: perl-doc Version: 5.8.8-6.1 Severity: wishlist File: /usr/share/man/man3/constant.3perl.gz Tags: patch The follow patch is wrong----maybe-------I have no idea. -----------who knows...............not me. ----------I have now removed all usage of "constant" from my program-----as it is abstruse to me. --- /usr/share/perl/5.8.8/constant.pod 2006-08-07 00:00:08.000000000 +0800 +++ /tmp/constant.pod 2007-01-06 12:35:41.016419000 +0800 @@ -86,8 +86,12 @@ =head2 List constants -Constants may be lists of more (or less) than one value. A constant -with no values evaluates to C<undef> in scalar context. Note that +Constants may be lists of more (or less) than one value: + + use constant BLA => (0,4); + print (BLA)[1]; #prints 4 + +A constant with no values evaluates to C<undef> in scalar context. Note that constants with more than one value do I<not> return their last value in scalar context as one might expect. They currently return the number of values, but B<this may change in the future>. Do not use constants @@ -120,7 +124,8 @@ use constant { FOO => "A single value", - BAR => "This", "won't", "work!", # Error! +## BAR => "This", "won't", "work!", # Error! + NUBAR => ("But", "this", "will") }; This is a fundamental limitation of the way hashes are constructed in
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--- Begin Message ---On Mon, Jan 08, 2007 at 11:53:24PM +0800, Dan Jacobson wrote: > Package: perl-doc > Version: 5.8.8-6.1 > Severity: wishlist > File: /usr/share/man/man3/constant.3perl.gz > Tags: patch > > The follow patch is wrong----maybe-------I have no idea. > -----------who knows...............not me. > ----------I have now removed all usage of "constant" from my > program-----as it is abstruse to me. > + use constant BLA => (0,4); > + print (BLA)[1]; #prints 4 Using parentheses to slice the list is already shown in the WEEKDAYS example, so I don't think this adds much. > use constant { > FOO => "A single value", > - BAR => "This", "won't", "work!", # Error! > +## BAR => "This", "won't", "work!", # Error! > + NUBAR => ("But", "this", "will") > }; > > This is a fundamental limitation of the way hashes are constructed in It won't work, because of the fundamental limitation mentioned. You are supplying a hash with the keys "FOO", "NUBAR" and "this", and getting constants by the same name. I'm closing this. Cheers, -- Niko Tyni [EMAIL PROTECTED]
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