Well, what's a variable to you?

• Is each name a variable?

  Well, there's only one name.

• Is each block of allocated memory a variable?

  $x has three given my $x = '123'; (SV head, SV body, string buffer).

  %hash has 9 (-ish) given my %hash; $hash{'key'} = '123';.

  my %hash; $hash{key}{subkey} = '123'; would have double minus two what my %hash; $hash{key} = '123'; has.

  (Not counting any memory used by the pad or by the memory allocation system.)

• Or are you constraining yourself to SVs and their derivatives (AV, HV, etc)?

  $hash{key} = '123'; involves a hash (with a key and a number buckets) and a scalar.

  $hash{key}{subkey} = '123'; involves two hashes (with a key and a number buckets each) and two scalars (one a reference, the other a string).

Your question doesn't make that much sense. What's your real question?

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