Sachin Hegde wrote:
>
> Hi all,
Hello,
> How do I efficiently delete all the entries in a Hash of arrays.
> suppose I have
> %HOA = { one => [ "a","b","c"],
> two => [ "x","y","z"],
> };
It looks like you don't have warnings enabled otherwise you would get
this warning:
Reference found where even-sized list expected at <program name> line n.
A hash has to be populated with a list with an even number of elements
(2, 4, 6, 8, etc.) while you are assigning a single element (reference
to anonymous hash.) You need to use parenthesis instead of braces or
assign the reference to a scalar instead of a hash.
my %HOA = ( one => [ 'a', 'b', 'c' ],
two => [ 'x', 'y', 'z' ],
);
Or:
my $HOA = { one => [ 'a', 'b', 'c' ],
two => [ 'x', 'y', 'z' ],
};
> I want
> %HOA = {};
What you want is:
%HOA = ();
John
--
use Perl;
program
fulfillment
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