There are different methods, but I prefer to use: 
no strict 'refs';
my $old_puts = *{"puts"}{CODE};
no warnings 'redefine';
*{"puts"} = sub { ... };

puts();        # "New" puts.
&$old_puts();  # "Old" puts.

[download]
I think Memoize uses a similar construct.

In reply to Re: perl equivalent to ruby's alias by JavaFan
in thread perl equivalent to ruby's alias by Alien

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