Re^10: Does @{ } copy arrays?

Unfortunately, none of those 'remedies' work:

C:\test>p1
[0] Perl> use Devel::Size qw[ size total_size ];;
[0] Perl> @a = 1 .. 10;;
[0] Perl> print size( \@a ), ':', total_size( \@a );;
256 : 496
[0] Perl> print $#a;;
9
[0] Perl> print size( \@a ), ':', total_size( \@a );;
440 : 680

C:\test>p1
[0] Perl> use Devel::Size qw[ size total_size ];;
[0] Perl> @a = 1 .. 10;;
[0] Perl> print size( \@a ), ':', total_size( \@a );;
256 : 496
[0] Perl> $x = 0+$#a;;
[0] Perl> print size( \@a ), ':', total_size( \@a );;
432 : 672

C:\test>p1
[0] Perl> use Devel::Size qw[ size total_size ];;
[0] Perl> @a = 1 .. 10;;
[0] Perl> print size( \@a ), ':', total_size( \@a );;
256 : 496
[0] Perl> $x = ${ \$#a };;
[0] Perl> print size( \@a ), ':', total_size( \@a );;
432 : 672
[download]

In every case, the mere mention of $#a has already caused the damage to be done. Trading 76-bytes per array to save 4-bytes per array does not make sense.

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Comment on Re^10: Does @{ } copy arrays? Download Code

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Re^11: Does @{ } copy arrays? by ikegami (Patriarch) on Oct 23, 2009 at 22:56 UTC
In every case, the mere mention of $#a has already caused the damage to be done. As I've already mentioned, we're talking about a Perl that's fixed to not add the magic for rvalue `$#a`.	[reply] [d/l]