Re^2: Dereferencing a Hash of Arrays

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Re^3: Dereferencing a Hash of Arrays by stefbv (Priest) on Jun 14, 2011 at 07:15 UTC
Only one :), with 2 array refs. (AoA) `say "@$_" for values %alphabet;` [download]	[reply] [d/l]
Re^4: Dereferencing a Hash of Arrays by toro (Beadle) on Jun 14, 2011 at 07:48 UTC
Thanks stefby, that works. But I don't understand why. Where does `$_` derive from in this case, and why do I need `""`?	[reply] [d/l] [select]
Re^5: Dereferencing a Hash of Arrays by stefbv (Priest) on Jun 14, 2011 at 08:21 UTC
From the perlvar man page: $_ is "The default iterator variable in a foreach loop if no other variable is supplied." Using double quotes is equivalent with a join operation that uses a space as EXPR. `join(' ', @$_)`	[reply] [d/l]
Re^6: Dereferencing a Hash of Arrays by jwkrahn (Abbot) on Jun 14, 2011 at 12:16 UTC
Re^6: Dereferencing a Hash of Arrays by toro (Beadle) on Jun 14, 2011 at 20:19 UTC
Re^7: Dereferencing a Hash of Arrays by Anonymous Monk on Jun 14, 2011 at 21:48 UTC
Re^5: Dereferencing a Hash of Arrays by Anonymous Monk on Jun 14, 2011 at 09:23 UTC
Most every perl comes with perldoc `$ perldoc -v $_ $ARG $_ The default input and pattern-searching space. The followi +ng ... ... ... ... ... ... ... (Mnemonic: underline is understood in certain operations.)` [download]	[reply] [d/l]