SPUG: Shouldn't this work?
ced at carios2.ca.boeing.com
ced at carios2.ca.boeing.com
Thu Nov 29 15:23:12 CST 2001
> The qw operator creates an array, not an arrayref. The qw operator is
> magical in that you can use a delimiter that is part of an open/close
> pair, like {}, [], (), or a 'unary' delimiter, like $$, %%, ##, //, ||,
> whatever. They all mean the same thing.
Just an slight term clarification (to remind myself mostly) but
"array" may be a confusing word in this context.
The qw operator creates a list rather than an actual Perl array.
In other words, if an actual array had been created the $aref below
would have been an array in scalar context and $aref would be 4 and
there wouldn't have been a -w warning.
Instead, the original: my $aref = qw[one two three four];
is equivalent to: my $aref = ("one","two","three","four");
$aref now becomes "four" and you see the warnings:
"Useless use of a constant in void context"
because the initial list members are just being discarded by by
the comma operator.
Rgds,
--
Charles DeRykus
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