Thanks Chas, most useful.
Regards,
Tim Bowden
On Mon, 2008-02-25 at 09:55 -0500, Chas. Owens wrote:
> On Mon, Feb 25, 2008 at 9:01 AM, Tim Bowden <[EMAIL PROTECTED]> wrote:
> > Making progress. Needed to understand hash references, and how to
> > de-reference them.
> snip
>
> Quick cheat sheet:
>
> #make a hash reference
> my $ref = \%hash;
> my $ref = { key1 => "val1", key2 => "val2" };
> my $ref = { %hash };
>
> #access a key
> print $ref->{key1};
>
> #access a slice
> print join("\t", @{$ref}{qw<key1 key2>}), "\n";
>
> #get all of its keys
> my @keys = keys %{$ref}; #note, the {} are only necessary if $ref is a
> complex expression
>
> $ref can be any scalar value that hold a hash reference, so say you
> have an array of hash refs named @foo, you can say
>
> my @keys = keys %{$foo[0]};
>
> to get the keys of the first element in @foo.
>
> --
> Chas. Owens
> wonkden.net
> The most important skill a programmer can have is the ability to read.
>
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