Re^3: beginner question - why is hash key unquoted and in capitals

$sub{$dir}{CALLBACK} is short hand for $sub{$dir}->{CALLBACK}, and they are literally equivalent. Any time an array or a hash contain array or hash references, you can use that notation. This is discussed in Arrow Rule in perlreftut.

The value held in $sub{$dir} is being dereferenced as a hash, and then the value stored with key CALLBACK is being set to $callback. I find halfcountplus's statement on this misleading at best.

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Re^4: beginner question - why is hash key unquoted and in capitals by Anonymous Monk on Oct 16, 2010 at 16:35 UTC
Hi, thanks for answering. That is what I thought but the other comment confused me (and a beginner is easily confused!)	[reply]