Finding size of scalar

[rotis23]

Hi All,

How do I find the size (in bytes) of a scalar?

Specifically, I want to find the size of a string (including control chars etc) in memory.

Thanks, rotis23

 

[stevexff]

length($myscalar);

Note this gives the length in characters, not bytes. But it should include the control characters, if any.

 

[rotis23]

Thansk stevexff.

What if I had some binary or object data? How could I determine the size (in bytes) used in memory?

 

[ishnid]

This maybe?

require bytes;
print bytes::length( $myscalar );

 

[rotis23]

Thanks ishnid.

That only works with scalars. Need to be able to size arrays (I guess I could cycle through) and other non-scalar entities.

 

[KevinADC]

yes you can loop through:

my @file = qw(one two three four five six);

{
   use bytes;
   my $bytes = 0;
   for (@file) {
      $bytes += (length $_);
   }
   print "$bytes";
}

 

[mlibeson]

Another way instead of looping:

require bytes;
print bytes::length( join("",@myscalar) );

Michael Libeson