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  1. or download this
    put_string_ref( \(get_string()) ); # pass return value of get_string()
put_string_ref( \(&get_string) );  # pass a coderef pointing to &get_s
+tring
  2. or download this
    \&func  # gives you a reference to a function
\func() # gives you a reference to the return value of func
  3. or download this
    sub func { "the string"; }

print \&func,  "\n";  # prints CODE(0x814d990)
print \func(), "\n";  # prints SCALAR(0x813aa8c)