Re^2: beginner question - why is hash key unquoted and in capitals

Hi If nothing is being dereferenced, can you tell me what is going on? Why are there 2 adjacent pairs of curly braces? I thought when you say that it meant there was an implicit -> operator? I am probably wrong and have only just read about references today. I understand the concept but find the notation confusing thanks

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Re^3: beginner question - why is hash key unquoted and in capitals by kennethk (Abbot) on Oct 16, 2010 at 15:31 UTC
`$sub{$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.	[reply] [d/l] [select]
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]