SPUG: Efficiency of Eval

[Asim Jalis]

Is:

  eval { some_function_which_calls_die_on_error ($a) ; <stuff> ; }
  if ($@) { <handle-exception> ; }

more efficient, or is:

  $r = some_function_which_returns_non_zero_on_error ($a) ; 
  if ($r != 0) { <handle-exception> }
  else         { <stuff> . . . <stuff> ; }

more efficient (in terms of speed). (Ignore code typos.)

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