${hash}{"key"} is the same as $hash{"key"} (for reasonably named variables) so I'd suggest you adopt the second style for most uses. But in a string expansion, ${var} is used like $var but (at least usually) stops interpretting at the closing } (this is all a bit imprecise in an attempt to be DWIMish) so you can write "Sold $n ${item}s" instead of "Sold $n $item"."s". So "${hash}{'key'}" is the same as $hash."{'key'}".

And $hash{"key"} is the same as $hash{key} if "key" is just letters, numbers, and underscores. So you can use any of these: 

    print "name is $input_queue{name}\n";
    print "name is $input_queue{'name'}\n";
    print qq<name is $input_queue{"name"}\n>;
    print "name is ".$input_queue{"name"}."\n";

[download]
to name just a few.

        - tye (but my friends call me "Tye")

In reply to (tye)Re: Hash Printing Question by tye
in thread Hash Printing Question by websavvy

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