Pardon me for being so dense, but 

  DB<1> sub altervar { $_[ 0 ] =~ s/a/b/g }
  DB<2> $var_elsewhere = 'aaa'
  DB<3> altervar( $var_elsewhere )
  DB<4> p $var_elsewhere
bbb

[download]
This solution seems too trivial. What am I missing?

Update: Thanks to BrowserUk++ for pointing out the requirement I missed.

the lowliest monk

In reply to Re: Simple Pass By Reference by tlm
in thread Simple Pass By Reference by tomazos

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