Re^2: conditional statements in list constructors


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Re^2: conditional statements in list constructors

by AnomalousMonk (Archbishop)

on Mar 27, 2014 at 15:10 UTC ( [id://1079942]=note: print w/replies, xml )

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in reply to Re: conditional statements in list constructors
in thread conditional statements in list constructors

Taking a reference to a list actually returns a list of references to each item in the original list. ... probably ... good ... to avoid ...:

$arrayref = \(...);

E.g.:

c:\@Work\Perl\monks>perl -wMstrict -le
"my $not_really_an_arrayref = \('one', 'two', 'three');
 print $$not_really_an_arrayref;
"
three
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Re^3: conditional statements in list constructors
by kcott (Archbishop) on Mar 27, 2014 at 18:44 UTC

Good point; however, the way you'd normally dereference an arrayref generates a fatal runtime error:

$ perl -le '           
    my $think_this_is_an_arrayref = \(qw{one two three});
    print qq{Probably not dereference like this: $$think_this_is_an_ar
+rayref};
    print qq{Probably would dereference like this: @$think_this_is_an_
+arrayref};
'
Probably not dereference like this: three
Not an ARRAY reference at -e line 4.
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-- Ken

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