Jim Gibson wrote:
At 2:00 AM -0700 9/25/10, feltra wrote:
Am using arrays with only references in a sub-routine. While I got
the hang of how to access an element of the array using the '->'
operator, I do not know how to intialize this array. I.e. I want to
be able to do something like
@myarr=(); $#myarr = -1;
inside the subroutine, but myarr is only a reference to an array not
the actual array...
[] is the notation for a reference to an array.
\@ is the notation for a reference to an array, [] is an anonymous array.
For example, if you want to initialize a scalar variable so that it
contains a reference to an anonymous, empty array, you would do this:
my $myarr = [];
You can initialize the array to contain data:
my $myarr = [ 'a', 'b', 'c' ];
or
my $myarr = [ qw( a b c) ];
To copy the contents of an array into an anonymous array and save a
reference to the anonymous array:
my $myarr = [ @other_array ];
Does that help?
That is not relevant to the OP's question.
John
--
Any intelligent fool can make things bigger and
more complex... It takes a touch of genius -
and a lot of courage to move in the opposite
direction. -- Albert Einstein
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